One your desktop or in your start menu, RIGHT click on "MY COMPUTER" and then scroll down and click on "properties". This will give you information about the computer and such.
Now, close that and double click my computer. if you single left click on the C' drive you should see info on the left about capacities. but according to the numebr it is a 30 gig drive.
With out a CDR or DVDR the computer is worth about $40 plus shipping.