Recently this blogger managed to install ubuntu on my laptop(IBM Thinkpad Cel 1.4Ghz 256 MB RAM) – here's 13 good applications to use.
Read it here
3. Lightweight Eye Candy for your Desktop – aDesklets
If you want to have Weather information , CPU Status , Battery Status , and other useful information shown on your desktop this application is for you .It provides features similar to available in Mac OS X Dashboard which similarly allows viewing information on desktop as widgets ,it is quite similar to another application available on Linux which provides these features – gDesklets however it occupies much less resource as compared to gDesklets .