Hey guys, sorry if it's a very newbie question, but I haven't managed to find it and I need to be certain about this.
I do have Wordpress default (let's call it "normal wp") installation running 100% on my website (http://www.daletigre.com), but I want to try WPMU.
My question is: Can I install WPMU over my normal wp, using same database? Or do I need to create a new table and backup/restore my normal wp db?
No, although most of the code base is shared, this would be asking for trouble. For this purpose, think of them as completely separate applications.
Why not wait till 3.0? Only a month or two now.
Oh, 3.0 will bring this upgrade function?
Yes, it's been big news for months.
WPMU is merging with single WordPress. It will be called a Network and the blogs will be Sites.
Here's a draft page with instructions:
http://codex.wordpress.org/User:Andrea/Create_A_Network