Thanks. It probably means I am not WPA-capable myself. I'll sign up for a computer science degree at the University of Phoenix and see whether it improves things.
MRogers recommended the Linksys WRT54G or the Airport Extreme, but neither is available in Taiwan. Belkin was the only renowned brand I found.
You might think that computer stuff is easy to find and cheap in Taiwan, since most is produced here or in China by Taiwanese OEM manufacturers. But the truth is that everything is horribly expensive compared to HK or the US and the choice is really limited.