If you have an original 701 eeePC you need a lean mean and tight OS - Puppy Linux's Puppeee is just that.
I put in 2Gig of ram into my 701 which means Puppy (who loads the OS into RAM) flies. Even with the limitation of the 900 Mhz CPU.
The Kernel is optimised for the CPU too.
Has Chrome with flash 10 installed by default. You just need to add OpenOffice (LibreOffice) to the base install.
I'm now trying to work out how to get the Arduino IDE running, processing works fine but it packages its own Java...