Cleaning Temp files?

[godawgs]

These are probably dumb questions, but I'd rather be safe than sorry. I want to install a new anti-virus program, so I need to remove the old one completely and then I want to clean out the C:/Documents&Settings/User(me)/Local Settings/Temp files and folders before installing the new program. My ..../Local Settings/Temp folder has a lot, about 108MB of files and folders that CCleaner marks for deletion, unless they are less than 48 hrs. old. The folders in the Temp folder include everything from a folder with net.framework update logs and net.framework wrarpper text docs to a folder with icsjh.dll, icslta.dll, icsscan.dll, and icsweb.dll files.

1. Is it ok to delete all of these or should I make a restore point before before allowing CCleaner to do the deletions?

2. Will a single restore point suffice before running CCleaner on all other limited user accounts,(my account is an admin. acct.), or should I make a new restore point once I enter each additional account?

3. CCleaner has marked a lot of index.dat files for cleaning. I have read that the program marks them so they can be cleaned on the next re-boot. Does anyone know of any probems that this has caused?

 

I would appreciste any help.

Thanks.