Hi, so I found a beautiful G5 at the local flea market. It's one i always wanted at home but could only have at my place of employment. anyways, I want to make certain that it works but there was no internal drive inside. Where can I find an appropriate drive that is inexpensive just in case the computer doesn't work. If the computer does work, I don't mind upgrading to a better drive and using this first one as a second. With the newer, faster ones out there, I don't want to have to mod this to try it out. Help?