65 dollars/euros seems expensive for 1GB of DDR2, but I have 0 idea how prices are in anywhere but the US, heh. In the US, we can get 2GB for about 65 dollars, so it may be expensive. The timings on it are awfully agressive for lower end memory, for sure.
The BIOS is stupidly easy on that board: Just download the BIOS from Asus, put it on a flash drive, go into the BIOS, go to "Tools", and select the EZ-Bios. It boots into the tool, looks at the USB drive, and voila, good to go.