They're both .big files. It's just that Warlords works and Clone Wars doesn't. So if that's not the reason then it must be something with Clone Wars itself, or something in the settings I didn't do right.
Wow, since S3 is defunct, and has been for a few years, you should probably get a new card. I'm willing to bet even today's budget cards outperform that thing.
I've got both installed, and Clone Wars won't work at all, period. Warlords itself still works fine though. I'm guessing it's one or the other, so I chose Warlords.