WordPress MU

I used MAMP to install MU locally. What do I do if I need to design two wordpress mu sites a time?

Sorry let me rephrase that. How do I create create multiple Wordpress MU databases using MAMP?

Not familiar with MAMP, but if you created one folder for the original install, just do a second for the next one and add it to the hosts file.

So long as the second install isn't in a subdirectory of the first, you'll be fine.