My girls usually will use the computer for educational games. but here are the software I usually use AUTOCADD 2000, ADOBE PHOTOSHOP,MIcrosoft OFFICE, i particularly fancy strategy games like Commando series, warcraft series, command and conquer series, JUmpstart educational games and photo editing softwares for a vivitar digital camera. will ill be able to run this programs satisfactorily on a Celeron computer in case i use it as a backup computer?