I do have 1 gig of RAM and it feels very fine for XP SP2.
But I cannot say if it is necessary.
In my opinion it won't harm to have more.

Does no one want to add a comment?

Hi all, I could already learn a lot in this forum. It's great. Now I'd like to post a new topic on my own because I have not found a satisfying answer using the search-function. Soon I will own a TP R40 with an UltrabayPlus I think. AFAIK it will be equipped with a DVD-ROM and therefore I would like...