I'd call or write:
Tell them what your machine is and they will tell you, with a 100% guarantee, what you need. Kingston is cheaper but crucial is sort of the gold standard.
Many, many people use the chespest ram they can find and have no problems at all. I must admit that I chose to go the other route and buy crucial... it's all up to you.
I went to a store named: PCDominio
they say me that u need to look for the right ram model your laptop uses and I searched in a strange browser in their page, and 256mb ram cost 70DLLS!!!!.....
well here in Mexico.
Is this true or I can just upgrade any type of DDR 333 MHz SDRAM RAM
Like a Kingstone DDR 333 MHz SDRAM RAM (anymodel)
Watch it here http://www.pcdomino.com/Computers/merchant.mvc?Screen=CTGY&Store_Code=domino&EX=&Category_Code=1CONFMEM