HOW HARD IS IT TO CHANGE THE STRUT BELLOWS ON THE FRONT OF MY 2001 MERCEDES.THE CAR IS DOWN ON THE FRONT WHEELS EVERY MORNING.I ASSUME THAT THE BELLOWS ARE LEAKING.

Ok first of all your car has shocks in the rear and they are not very hard to replace or terribly expensive. The front has what they call struts which in effect are shocks with a springs wrapped around them as an assembly. Replacing struts can be expensive and will probably need to be changed by a shop if you are not equipped to do it yourself. You will most likely need to get the wheels aligned as well. I recommend calling around to different shops for a price. My guess for new front struts installed plus the alignment is $300-$400.

Have your struts checked.

I have the same problem when I turn into a driveway

The shocks in the rear just unbolt top and bottom, disconnect the air line and replace them.

Struts are used in the front. You'll need to remove them and then have a spring compressor to change the struts. An alignment check is recommended after the struts are replaced.

Yes, the wheel bearing play is adjustable on your vehicle. It is not really hard to do, however it requires special tools (pullers) to remove the hub assembly cover without damaging things.

There are bearings on top of the strut. this is probably your noise. It's not hard to remove the strut, three nuts on top and two bolts on bottom, but you will need a coil spring depressor to remove the bearing plate at the top of the strut.

I assume you changed front strut right? but I assume you reused spring? I'd replace the spring on corner in question.

if you look under the wheelarch,above the front wheel,if you can see a strut surrounded by a spring,then you have both.(the damper is inside the strut)(ive put it this way so you can see for yourself.)NOW tyre wear,if your shockers have gone the wear pattern will be flat across the tyre tread/no tread/tread/no tread,and you will feel like you have square wheels.
to check shockers, push hard down on one corner,the car should bounce up,then down,then settle at its original height.no more.

try the simple solution first put your front tires on back and back tires on front. check your air pressure then take it for a drive and see if any thing has changed. if so you probably have a badly worn tire. if no change have someone move the steering wheel back and forth wyle you are under the fornt of the car (dont forget to chalk the wheels) and see if any of your steering components are loose/moving. if nothing is loose and your tires are good try to bounce the front end. if you can really get the front of the car going up and down pretty easy you havce bad struts/shocks.