start button, right click on my computer, select properties: this window will list your ram and cpu speed.

start button, right click my computer, click properties, click hardware tab, click device manager button, double click display adapters, this will list your video card.

right click on the start button, click explore or it may be explore all users, than in the list in the new window, right click c: drive, select properties this will tell you your free space on your drive, wow needs like 10 gigs or something

right click anywhere on your task bar on your desktop while wow is running, click task manager, click the performance tab, this will show you how much of your cpu and ram is being used while your gaming and help you see what needs upgrading.