also... if you decline the agreement first time you run runescape... then it jsut doesn't work... that happened on my desktop... and i had to put my pc into factory settings :-(
Just buy a laptop with a good(ish) processor and ram, and dnt bother about the hd space.... then just buy an external hd (80gig is like ̢̮â¬Å¡Ãâã80 in the shops... so could probably find it cheaper) Or just buy a really good pc :P
Different cross-over softwares work better for different games from different developers. Certain software pieces are more effective with different game engines. Its well worth switching but you should do some research first :) Just another suggestion