For once im in agreement with everyone... wow that thing is worse than my 8 year old Dell Laptop
Even the most Cheapest Budget PC would knock yer socks off in comparison to what you got now mate, time to get yourself a new fun box it would be a waste of money gettin a new hdd put in there, the hdd would be worth more than the whole compy
Edit: lol Googling your Computer model the 6th link is you asking for help on About.com