I'm using win 98se with 1024 mb ram now (for playing!). Even win 2000 pro has performance problems in certain configurations with the memory adressing when you get over a certain limit.Win xp home and pro are the newest, but certainly for some applications not the best os'ses (that's why they released their service-pack lately). Perhaps You should try to install Vue in a different partition,could be a problem with the virtual memory used by you os and Vue at the same time (page file sys). :-)

http://www.fredivoss.de 

...yippi ah yeah or something like that...