how can i tell how much ram my laptop can support?

EDIT: okay, according to the interweb, 2gb is the max memory. pulling off the keyboard, the memory in it says DDR266 (i have one 512 stick and one 256 stick). the interweb search suggests i buy "1GB Toshiba Notebook Low-Power PC2100 DDR SODIMM (p/n PA3278U-1M1G) "

how do i tell what all is compatibleinterchangeable with DDR266?

You can do a google search for your model and one of the websites will tell you.

thanks, did that and have a new question now

http://www.crucial.com/systemscanner/

thats odd. it says 1 gb is my max

on the 5 computers ive used it on its never been wrong so...

fair enough. thanks for that.

now i tyr to find out how much memory i have in my video. if im reading this right . . . 32 mbs. holy crap.

If you're running DDR266, you should probably continue to run DDR266.

In addition to the DRAM frequency, try to match the "Latency parameters." Some laptops are pickier than others, and you might get away without matching, but at the same time you don't want to sacrifice either performance or stability.

Suggest running CPU-Z (http://www.cpuid.com/cpuz.php) and paying particular attention to the SPD timings for the current memory chip(*) that you have installed.

From there, Newegg.com does a pretty job spelling the SPD numbers out, making for an easy purchase.

For what it'* worth.