Limewire is not the best way to get programs...you will find many that are freeware or shareware...many will contain viruses...

If you still want to give it a try, I would suggest antivirus protection (you should have this anyway! You can get it free if you don't have it.) Also, try to find out what size file you should expect for a program. Many of the small files that turn up in search results are viruses.

Good Luck