One suggestion was to clean my registry. I am not sure how to do this. But would love to find a way to do so.
Definitely Stay away from any and all so called Registry Cleaners.
Most of them will end up doing more harm than good in the long run.
Windows 7 does not need it.
The only safe registry cleaner is the one in Windows Live OneCare Safety Scanner for Vista and Windows 7 edition
It run automatically, you won't see anything
But I am not sure if it still exists in there or if they removed it. CCleaner
is ok to use and fairly safe.
However, if you do not know what you are doing, you are taking a risk on messing with the registry a all.
My Advice, if you want to learn, go for it, but be prepared to nuke and reload if something goes wrong.
Yes you can backup your registry easy enough, but it ain't so simple for the average person to restore it.
Yes, it is simple enough for some of us, but, anyway,,, just take my word for it, it will be a pain if you don't know what you are doing.
As for getting rid of that file,,,You can also try Unlocker 1.9.0
If you can't get rid of it in Safe Mode either. Then personally, I prepare to reload my system.
If you used Bearshare at all you could be infected.