Re: A problem with laptop RAMs
No idea what Windows Starter is, but yeah, 32-Bit generally can use up to 3.46GB RAM (according to what Windows 7 32-Bit tells me, ATM), although only 3.25GB seems to show up in Windows XP.
Sorry, I don't have much else to add. :P
...except that it is generally recommended to use identical RAM for ultimate stability and performance. Also, the lowest speed RAM you have will be what all installed chips will run at.