Problem detected windows shut down

I have been having problems with for the past 2 days...in the middle of working on ebay listings, a window pops up that says...TurboLister.exe has enountered a problem and needs to close.

Last night when I was on my comcast homepage a window popped up...IE.exe has encountered a problem and needs to close. Today, all of a sudden my screen turned blue and this is what it said...

A problem has been detected and windows has been shut down to prevent damage to your computer. If this is the first time you have seen this Stop Error screen, restart your computer. If this screen apears again, follow these steps: Check to be sure you have adequate disk space. If a driver is identified in the Stop Mesage, disable the driver or check with the manufacturer for driver updates. Try changing video adapters. Check with your hardware vendor for any BIOS updates. Disable BIOS memory options such as caching or shadowing. If you need to use safe mode to remove or disable compnents, restart your computer, press F8 to select Advance Startup option and then select safe mode.

VSdatant.sys address A9E6B348 base at A9E4Eooo, Date Stamp 491cb331

Beginning dump of physical memory Physical memory dump complete Contact your system administrator or technical support group for further assitance.

When I restarted the computer it said...System has recovered from a seriious error. Error signature BCCode: 1000008c BCP1;c000005 BCP2:A9E6B348 BCP3;A9732B40 BCP4: 0000000 osver:5_1_2600 SP: 3_0 Product 256_1

When I clicked on the box, it said that usually this happens if you just installed something. I didn't so I thought I should try to do a system restore since I didn't know what was happening. It won't let me restore...I've tried about 7 different dates and it shuts down and goes through the process and then says System Restoration Incomplete. Your computer cannot be restored to March 7 etc.

Sorry this was so long, but I wanted to give as much info as possible. I am on my laptop now and I still have my computer on and was googling some info and so far no problem, but I'm afraid it's about to die...any help would be greatly appreciated.