Errors at startup... Cannot find unwise.exe...

I recently had a ton of viruses on my computer, but I installed eTrust EZ Antivirus and it removed 46 different infections, and I still check for infections weekly. Well, with this new antivirus program, most of all my problems on the computer are gone, except some things go wrong when I start it up.. When I turn on the computer, I get this error three times:

Could not load or run 'C:\Windows\unwise.exe' specified in the registry. Make sure the file exsists on your computer or remove the reference to it in the registry.

After hitting OK on all 3 of those errors, a folder always opens up. The folder is my "SBC" internet folder. I don't know why this opens up, but I'd like to know some way I could get it to not do that everytime I turn on the computer.

After that, I get another error type message that says:

Windows cannot open this file:

File: cnfg

To open this file, Windows needs to know what program created it. Windows can go online to look it up automatically, or you can manually select from a list of programs on your computer.

What do you want to do?

(option 1) Used the Web service to find the appropriate program
(option 2) Select the program from a list

Also, when I try to open a saved Text Document from any folder (such as My Documents) I get an error that says, again, "Windows cannot find unwise.exe" ... Is there some way I can unblock or reinstall this "unwise.exe"?

If you could tell me how to get rid of these minor errors, I would greatly appreciate it.

Thank you,
Paige Miller