Hi Eric, thanks for your input, however I was finally able to install or upgrade from 10.6.3 to 10.6.8 by utilizing this software download: Mac OS X 10.6.8 Update Combo v1.1. It was successful, I'm now also able to restart the computer as well.
But now I face a different problem, I now need to acquire another startup disk in order to REPAIR my HDrive. I went through "Disk Utilities", did the "verification" process, and it indicated that I need to restart my computer with a mac osx "installation disk" and then go through with the repair process. Unfortunately, I don't have my disks that came with the computer anymore, and I did borrow a friends startup disks but they turned out to be incompatible with my computer. So I'm going to try and utilize the "restore" process by uploading my contents onto an external disk, from there I'll reboot from that (I think?), and then I'll wipe my current HD clean! I'm trying to follow the instructions layed out on the computer as I go through this process. I think this may be the only solution to my dilemma, if you know of an easier or alternate way of going through this process I welcome your input. Thanks!