Which should I upgrade first, in the interest of gaming for the most part? Looking at picking up Age of Conan next week. Thanks in advance for any input.
That depends if you want cheapest upgrade or most effective performance-wise.
The cheapest upgrade is the RAM, however while this will speed up loading times and such the actual impact on game play (FPS) will be minimal. Price depends on the type and config of memory. A strict guess would be somewhere $60-$120
If you are looking for a real frame rate increase (like for AOC) then you definatly need a new video card. I would recommend the 8800GT as being the best bang for buck price starts at $180.
Due to a financial restraint I opted for the memory upgrade (for me to get a high end graphics card I'd need to replace my power supply, and to replace my power supply I need a bigger case or I need to find a decent outboard one)
Got it up to 3gb effective and it's running great!