[quote1210876336=Arclight]
Well I think you can just upconvert your DDR1 to DDR2 with a patch. or if you Have a big USB you might be able to use it for more Pagefile.
[/quote1210876336]
Gigabyte was at one time (2005) going to release a module that "upconverted" DDR RAM to DDR2...but the performance numbers were terrible, and in the end purchasing DDR2 was a lot cheaper than getting the modules. I'm not sure if they ever put them into final production, or if they are still available. As far as I know, that is the ONLY way to "upconvert" RAM, and it was specifically tailored to their motherboards, so it wouldn't work in another situation. Also, firmware will not fix this sort of problem (at least, not as far as I know).
As for adding more "pagefile," that won't fix the 512 module problem. There are two problems with that single stick...
1) mixing DDR with DDR2
2) running a single stick along with a set of paired sticks
No matter what else you do, leaving that single stick in there will slaughter your computer performance.