Recommended amount of memory using Paralells Desktop

I have a MacBook 2.2 GHZ with 1 GB memory. I´ve installed XP using Paralells Desktop.. While running Paralells everything is TOOO slow. How much memory would u recommend?? Will things get better if I put one more GB in my machine??

Hope someone can help me here..

you can never have enough ram

yes it will get better since you are trying to run OS X, Parallels and XP in just 1 gig

I have 4gb... I have xp installed with vmware fusion and allow it to use 2gb... everything works fine that way

I'd definitely recommend more than 1GB to make the experience snappier. Also, watch how much memory you allot to the VM and which OS has dominance over resources. You might be able to improve it some without adding more memory.