Markster:
The reason you miss XP so much might be related to the amount of RAM you have. Even though Vista Home Premium will run with 1 GB, it won't run particularly well. It is especially bad if 320 MB of that 1 GB is shared with the video system. My wife's laptop has 2 GB and is tolerable for her general needs (internet browsing, video streaming, a little OpenOffice). My computer had 2.5 GB RAM. I played with Vista a few times but tended to be unhappy with it for my personal needs on my main computer.l On the laptop, it was fine with 2 GB (even when I was the one using it), since I was accustomed to doiing one or two things at a time on the laptop probably. I think expanding it out to 4 GB was the best (and one of the cheapest) upgrades I could have done for my overall performance. The caching makes everything run better, and some things that would not run at all run fine. If this old motherboard supported it, I would not hesitate a second before dropping in 4 more gigabytes.
Even laptop RAM is cheap these days, just don't buy it from the manufacturer. Find out what you need; NewEgg it or what not; it is really easy to install (as long as you make sure you touch something metal to make sure you are discharged before ever touching the RAM and what not).