I'm completely green about SSD as well because up until now I've been content with my setup with traditional SATA drives but SSD have been on sale recently so it's become an option but I'm completely out to lunch on how to connect them.
Firstly, the spare molex connector is used by the video card I threw in there so are there any other options for adding SSD other than sacrificing the optical drive and/or one of the drive slots? I'd like to keep them populated with drives for storage.
Secondly, do SSD generate more/less heat than traditional drives?
Thinking of picking up an Intel 80GB for the apps and Lion for the MP 2008.