I have set up my wireless router and it works fine on my computer but my other computer gets on the internet but will not get on a vpn network. what am i doing wrong

The router's PPTP passthrough and IPSec settings assume that you're connecting to an external VPN server on the public side of the network, but it sounds like you're hosting your VPN server inside your local network. If this is the case, you may just want to have your windows VPN box in a DMZ, or get a router that you can exert more control over. Be wary, if you're doing this at a residential location, your internet provider will probably block or "shape" this type of incoming traffic to your local network.

The devices appear to be in functioning order. However, the connection network requires another computer on which signals are directed towards. The computer server on which network resources are acquirable is unavailable. For example, your devices can provide sevices to another computer if any were avialble. Usually an internet provider would allow acess to several computer with subscription. Consult an internet service provider, examples, at & t, T- mobile, Verizon, boost mobile, or consult any available at your local area. www.at&t.com, www.t-mobile.com, www.verizon.com, Goodluck

You may have to link up with your IT department at work and have them list your linksys router for access to the corporate network.

This should help.

Connect your router to computer with ethernet cable then you can access it with following default link.
http://192.168.0.1
or
http://192.168.1.1
If you are not able to access it with above ip then check your computers ip address gateway ip is your router ip try with it.
Then it ask for user name and password.
Type user as "admin" and password as "admin" or "password" or blank.
Then you can see configuration page of router.
Click on WAN settings and set those settings as your internet service provider settings.
Enable DHCP if you want to get ip from router.
Click on wireless settings enable wireless then enable WEP Security then add WEP code .It is your password to connect wi fi.Then save settings and restart router.
Then you can connect your wi fi network with that code.
When you connect vpn router to wireless router set in wi fi lan property as your vpn network range set vpn router ip as gateway ip of wireless router.Then save settings and restart it.
Let me know if you need further assistance.
Thanks for using FixYa.

Did you already forward port 1723? I guess you have done that. To isolate it, try to bypass the router and setup or establish the VPN session there. If it doesn't work, maybe your ISP doesn't allow port 1723 or it's just the modem.

Look at the number of users you have enabled in the router. If you only have 3 and you are using 4 computers, you could be getting the kind of behavior you are describing based on how many computers you have connected at the time.

when you have 2 connections open at the same time you need to tell the computer which one you want to use to connect to the internet. the way to do this depends on the operating system but in windows the setting is in advanced properties of the network connection in control panel

My guess is that dhcp is using the same private network scheme. Try changing your home network scheme to something different than your office.
For example:
Office = 192.168.1.x
home = 192.168.2.x

You just need to change the wireless channel of your router since you have a cordless phone because some devices like a cordless phone that is running on the same frequency like the router which is 2.4ghz really interfere with the router signal so it advisable you set the router to channel 11 to boost the signal if its still not solving your problem you can consider getting a wireless range expander that will expand the signal of your wireless router so wont have the problem anymore.

login to the router and check these things
IPSec Passthrough: Enable Disable               PPTP Passthrough: Enable Disable               L2TP Passthrough: Enable Disable