Most newer softwares have already phased out older windows like 98 & ME. Some companies choose to offer their software to run on it, most won't now a days so I suggest you upgrade your operating system either way. And maybe even your computer... From what I remember, the gateway 2k was slow... for me at least... Anyways, from what I also remember, GT3 will not run on any opererating system less than windows 2000 & XP (meaning ME will not work, windows 98, 95, 3.1 etc). I also can't remember exactly what processor that gateway had, but I think it was under 800mhz (which is also minimal for GT3), and needs 128mb.