Yeah 448MB is not enough for windows to run happily.
Look at adding about another 1GB, that would solve your problem with virtual memory and will make a very noticeable difference in the overall speed of your computer.
If you look here there is a scanner that will tell you what ram to buy and there are instructions on fitting on the site too.
You don't have to buy the ram from this place, just make sure you buy some that matches the specs
http://www.crucial.com/uk/systemscanner/
yogasun, same goes for you if your getting a lot of virtual memory low problems.