WordPress MU

Greets! I just used the convenient little one-touch button in Godaddy to auto-install WordPress 2.9.1 onto my site, but I was really wanting to install/use WordPressMµ .. I'm new to WP so I'm not familiar with what settings might be damaged (or what settings were set automatically by GoDaddy that I would not otherwise be aware of) if I try to overwrite with the WordPressMµ I downloaded... Any suggestions on how to "upgrade"? I would guess it's not as easy as just plopping WordPressMµ into the same directory (with the config file modified to have the proper MySQL codes) would it?

thanks for any input :D

What type of hosting are you using on Godaddy? You must have at least Deluxe level hosting with Linux, PHP5.