I found this today. Pretty useful actually.
http://www.curiousinventor.com/kits/roboduino
however, it still has limitations, and and i am still set on attempting on creating a larger version similar to this with a more powerful AVR processor. Maybe a sanguino based version. I don't know if it's practical, but I'm still going to keep working on it, even if it only turn out to be for my benefit.