i agree with the other Mac-heads that you can tell how much memory is installed in your Mac by looking up the "about this Mac" option in the apple menu. that applies to all macs regardless of which version of the operating system you have running on a Mac.
Additionally, there are on-line movies which instruct mac-users how to install additional memory without paying a techie to do it for you. These are available at the memory vendor "otherworldcomputing" which specailizes in serving Mac-heads.
I like the fact that you get your tools for electronics at a tire store. That's sort of like going to Timmy Horton's for a steak.
best to you ms fluff,
pi