Commands in progress won't show on screen...drawing circles, dim lines, ect.

Hi I'm new to the forum & am using AutoCad 2000. I'm recently having trouble with commands such as drawing a simple circle. While the command is in progress on the screen, it won't show the circle resizing with the mouse movement. Also the dimensions lines will not show with the mouse movement...you have to guess where they are & with the final click of the mouse to end the command they show. Why is this? How can I change it back to normal?

thanks for your time & any reply is appreciated,

-nick

Set DRAGMODE to "Auto"

(system variables are quirky today...)

thank you!

-nick