New Parallels user. A few questions and a problem

How much RAM?

I take it the 512/768 is the RAM you allocate during the Custom Setup process, but I'm interested to know where do you allocate the RAM for Parallels itself.

Also, if one intends to run a RAM-intensive program in XP through Parallels (I'm thinking NaturallySpeaking, no idea if it will work but it's worth a try) does the suggestion of 512/768 still apply? NaturallySpeaking has a recommended minimum RAM of 512 just for itself.

Richard
(MB 2G 2GB RAM)