Check it over the Internet very carefully mate, Win ME is a very highly unstable operating system. I use to love it too, It took me 2 two years to accept this hard fact. Its better to shift to Win 98 SE or XP. and yes the same XP disk for Home PC can be used.
Only remember to install it when using laptop on normal electric city and not on battery. First Shift your computer properties from Home BAsed PC to Mobile Docking PC and only then run your laptop on battery.
Try not to use XP instead use Win 98 SE if your laptop is below 700-800 MHZ. Its is a general belief that laptops below that starts running quite slow if they are on XP. Specially after few months.
I Hope I helped. BYE
I have a laptop running Windows Me. Is it feasible to install XP over this? Can I use the same disc I used on my main pc or do I need to buy a new one?