Anyway to unlock my DEFCON combo lock from my computer wiout taking my funiture apart and taking a wizzer wheel and cutting it off?

Disconnect the battery, take steering wheel air bag off and steering wheel. Drill the pin that holds the lock cylinder in place. It will allow you to turn it with a screw driver and disengage the locking pin. Re assemble. When you get a new one with a key, then just slide the new one in without having to take it apart.
If you want to do it quicker and destructive, then get a hacksaw and cut the lock pin by sliding the blade between the steering wheel and the steering shaft housing.

You can take the plastic covers off the steering column and try to spray light solvent into the steering lock area beneath the steering column to clean and lubricate the lock.
If that fails, if you have a dremel tool and some abrasive disks, and a Torx screwdriver that fits the screws behind the steering wheel, and a deep socket that fits the bolt that holds on the steering wheel, you can take the whole thing apart.
Disconnect the battery, wait a few minutes, then remove the Torx screws that hold the air bag to the steering wheel. The wire is a bit difficult to unplug from the air bag but it pulls out. Remove the bolt and mark the steering wheel so it goes back on the same tooth it came off of. As you pull it apart, take note of the location and orientation of the two spacer rings so they go back the way they belong. Snap ring pliers are handy for removing the snap ring, but any sharp tool will work.
With the dremel tool, cut straight slots in the the two security bolts in the top of the lock housing. Then use a short straight blade screwdriver bit to unscrew the bolts. The electrical part of the ignition is held on with a set screw that you have to loosen.
Once you get the lock housing apart, you can see what the problem is with the steering lock, or you can just pull out the lock bar and toss it and put the whole thing back together. Your steering wheel won't lock any more. but it will work.
Grease the upper steering column bearing in the lock housing while you have it apart. The best way to put that snap ring back on the steering column is to cut a short piece of 3/4" PVC pipe and use the steering wheel bolt and the PVC pipe to press the snap ring down the shaft until it snaps into its groove.
Eventually, your key and your lock cylinder will fail. Old lock cylinders almost never come out with a stiff wire the way they are designed to, so you have to replace the whole housing along with the lock cylinder. After you do this job, you will know exactly how to take care of that problem.

hey man, im not sure there is a way to reset it without knowing the combo first.
however, i did find a very detail video on how to figure out the code. if you go to

http://www.engadget.com/2006/09/08/the-lockdown-your-new-targus-defcon-cl-lock-hacked-by-beer/

and scroll down to the bottom, there is a link to a video you can download and watch that shows you step by step how to solve your problem. the video link is in blue and starts with the words "as shown in the video".
hope this helps

They have no way to reset one of these locks once the defaults have been changed. It is pretty much a dud. Sorry! i had the same problem with one of mine.

if you have forgotten the combo the only way to get the lock to open is to ' progress ' the combo wheels. since it is only a 3 digit combo - this will take anywhere from 15 to 40 minutes.
start with 000 then 001 then 002 etc... all the way to 999 ( but you will get the combo before 999 is reached ). after the combo is found, with the latch open push the lever to the to open position and set the new combo that you want.

c...

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This video I found helped me unlock mine in a few minutes after watching the video and trying it out.
It was surprisingly easy.
video direct: https://33ad.org/tmp/onr/defconcl_vuln.avi
post: http://www.lockpicking101.com/viewtopic.php?f=3&t=48865

An easy way? Yeah, sure, make it easy for thieves to bypass the security. :-)

On the average, you'll only have to try 5000 combinations, out of the possible 10 thousand. Or, buy/borrow a heavy-duty pair of bolt-cutters -- see: http://www.hand-tools.us/images/pictures/northern-industrial-18in-bolt-cutters.jpg

and cut away.

Check the MasterLock web site to see if they still offer to provide for forgotten combinations. Some years ago I got a combination for a standard rotary dial lock by providing the usual identification information plus a photo of the lock showing its serial number.

If you have a RCA Truflat TV/DVD combo try code 8888 to unlock parental control settings.