Well, i wouldn't have to buy the RAM anyways, since i get it from someone for free.. but the upgrade from win xp to win 7 would cost 30€ or so. On the other hand a new computer would cost me waay more.. but it would be worth it of course. At the moment I'm still running SONAR LE, which kinda works for me - but it's simply too inefficient in it's workflow and stuff. Yeah - sooner or later it will be SONAR X2 i guess. Anyway - thanks for the kind advice, it really helps.