This is something that drives me nuts every time I try to do it. Our AutoCAD guy is kind enough to show me the solution every time I hit it (because my memory is so fantastic), but I figured that THIS time I’ll blog it so I can look it up next time I forget.

If you have something that you are trying to move to (0,0), you would THINK you just have to select it, type ‘M’ for move, hit space, and enter ‘0′, comma, ‘0′, enter.

Bizarrely enough, it doesn’t, and I’ve even seen experienced AutoCAD dudes stumped by it. The answer is simple: turn off Dynamic Input, either by clicking on the ‘DYN’ slot in the status bar, or in the drafting options.
Alternatively, change the dynamic input options for coordinates: in AutoCAD LT 2007, this is in
Tools | Drafting Settings | Dynamic Input | Pointer Input Settings | Format: Absolute coordinates.

Whoosh!