Wow. Just wow. That one long sentence missing so many necessary words. I just can't understand it. If you have any more questions I would gladly help. Could you format them in a list so that I can read them more easily? Like this:
-this is a question?
-question 2?
it would help me. If I missed any questions just ask them again like that. Anyway from what I can decode you are asking or saying you plan to do:
-upgrade from 512MB of ram to 2GB
-If you are using windows xp, this will not speed up your computer in much of a measurable way. I have personally
found a ram upgrade past 1GB for XP to be redundant. I recommend keeping your current ram. upgrade would
be a waste of money
-Something about the cpu and bios and socket. And I think you might be asking if the upgrade would be worth the cost
The Pentium m is compatible with your socket. The difference would be measurable but still obsolete by today's
standards. So in my opinion upgrading the system would not be worth it. You also mention you have not taken
apart a laptop before. It is much more stressful as the parts are smaller and sometimes more frustrating to
work with.
-Something about voltage
I really can't decode what you're trying to ask here.
Personally I would not find any upgrade to that machine worthwhile. It would be more worthwhile to wait until you have the money to buy a new good laptop for about $500-600.
You say you want to upgrade to save on cost. What is the problem with your current machine? What do you use it for?