Where can I purchase ram, with all the right specs?

I've look online at all the major stores and cant seem to find ram with PC 133 144 Pin CL3 Sodimm 256mb ram. All I seem to find is PC 100 but not 133. Will PC 100 work in my mpc, if not what store can I purchase the correct ram from.

I got mine over the internet from Tiger Direct (in the US) - internet purchase is probably your best bet.

I ordered mine in a simple computer store. Just give them the right specifications and every computer store should be able to order the RAM you want.