Been busy with other projects for a while. I ordered through Crucial website. 2 stick of 4GB installed about a week ago and system is working great. I can now reopen my Reaper projects with multiple VSTi's going on and it runs stable. Doesn't seem any faster as far as I can tell but at least I can run a lot of stuff at once. The real problem I had was; I could have SampleTank running and add synth tracks one by one and it would run fine. Then I saved the project. Upon reopening it tried to load the whole project including each and every SampleTank synth track all at once. That's where it choked. Problem is; there is no clear warning that I have exceeded my RAMs ability to open a project if I where to save and close it in that exceeded state. So, If I max it out again with having 8GB RAM I'll be stuck and unable to reopen a project.
Maybe it would be wise to convert a few keeper ST3 tracks to Audio/WAV to reduce the re-opening load on RAM.

Thanks for the help everyone.

Does the noise in your head bother me ?