Finally got this working.
I bought Kingston HyperX 2GB mem and a Hitachi 500GB 7200rpm HDD. Came in Friday.
After reading about how to triple boot using Netbookinstaller, I tried making the small USB flash drive and copied the MacOSX disk to an ISO then to the big USB flash drive. Booted to it, got some kind of mach error. Gave up on that idea. I decided to try Windows first so I partitioned using the windows 7 installer [400win,100free]. Installed Windows, got it updated, then went about trying to get Mandriva Linux One 2010 installed. Partitioned the freespace in half and installed on the 2nd partition. Then I got my USB IDE adapter and plugged it into a DVD rom. Ran the NetbookBootCD and tried to swap to my OSX disk and it would just hang on F5. I thought I'd try booting directly to the OSX disk and low and behold it booted directly to the setup! I tried installing it but it wouldn't let me use the free space to install. SO I removed all the partitions with the OSX install disk utility and partitioned it [400free,50hfs,50free]. Installed macos, then went on to installing windows. I had to delete the 400gb partition and rebuild, but the windows 7 install kept complaining that it couldn't install in that partition. Rebooted and it allowed me to install in the NTFS partition I made. Finished that, then installed mandriva via a live usb flash key I made. Pointed grub to MAC OS, windows and linux and now I can boot to any of the 3 on start up. Only problem I have sofar is that macos does not recognize my wireless card and it runs at 800X600 so it's squashed.