Error message "eyqacss.exe has encounted a problem and needs to close".

I have a Dell Dimension E310 system that is about 3 yrs old and running XP Media Center OS.

When I boot my PC, I get a message that says "eyqacss.exe has encountered a problem and needs to close".  I have no idea what is causing it but I have had some things going on that could be related: 

I was having a problem with my DVD drive - it would read CDs, but not DVDs and I know it did at one time but I'm just not sure when it quit. I kept trying to figure out what was wrong and I finally downloaded some software called Driver Genius - big mistake (I won't do that again!).  It changed my SigmaTel HD audio driver and messed up my sound.  I finally figured out how to download and reinstall the drive from the Dell site so I have it working again. Whew!  That was scary for a non technical person like me but I'm trying really hard to figure things out since I have retired and do not have the technical expertise from my coworkers anymore.  

The only other thing I have done to the system lately is to install the Service Pack 3.  I did have problems at first until I disabled my Webroot spy ware but after that it worked fine.  

It does not seem to be creating a problem other than the message comes up every time I boot.  Any ideas???