When Limewire asked if I wanted to have them scan my hard drive for shared files.. I told them no because I already downloaded Limewire under a different user on the same computer. So I figured that search wouldn't have been needed. Now I don't have any files I had already been sharing... What can I do if anything? Please reply..

So you're logged into a different user account. Then so long as the files you were sharing are accessible in this account, then manually add them. See How to Share Folders (click on link)

(Sorry there's a server problem at moment displaying sample images.)