As far as this new problem, do you have a firewall and anti virrus protection? If not you need to get them. You can get Zone Alarm free, and AVG anti virrus, also free. You can do a google search for them.
The reason I ask is, that you might have picked up a trojan or virrus.
You might have some kind of spyware. Look at
this and try and do what it says. At least do download the three items linked at the top of the page, Adaware and Spybot, and CoolWebSearch. Run these apps and let them quarantine/delete whatever they find.
Then on to HijackThis. If you understand all that is related to HijackThis, do what it says If not, run HijackThis, and post the log back here, and someone can look at it and tell you what to do.
And be sure and pay attention to the last lines of the instructions.
"Stop using IE, except for Windows-updates.
Get Firefox instead! from http://www.getfirefox.com"
Edit: Another link you might try for the drivers, is right here at TechSpot. Since you are able to get to this site, click
this link and try and download the 66.94 drivers that are currently at the top of that page. Those should be the ones you need, if you can access the page.