ok i got a compaq presario sr2010nx and it sucks right now i only have 512 mb of ram and 120gb of hardrive on it and want to just plain old upgrade this piece of $@#$ but i want to see some how to videos on changing the hardrive and ram and how much storage of hardrive should i et and how much ram can this hold and how many slots does it have? and also i running crappy windows xp home edition and want to know if i can upgrade it from windows XP to vista then vista to windows 7 how can i do this fro free anyone know? cause i really needa make my comp better so how can i do all of this?