It's been a while since I've played RO, so I decided to get back into it via a free server that Joel linked me to.

I re-downloaded the client and started to run it, but I've hit a snag: The game works fine if I run it in windowed mode--which triples lag. Lag can make the game unplayable even without that. However, if I try to run it in fullscreen mode, I get no display whatsoever; It switches resolution, and then changes the focus to another window. If I alt+tab back into Ragnarok, all I get is a black screen.

Googling the problem took me to a lot of FAQs that said that a black screen was a symptom of having a video card with less than 8 MB of RAM. I have 128 MB of video RAM and 768 MB of system RAM. RO does not need that much RAM.