I used a coworkers CAD to draw and while doing revision clouds, his was set up to where he made his own arc length distance.  How can i set this up on my cad?

Patience is a virtue.  No need to post twice inside of 2 minutes.The option for setting the arc length is available at the command line.  You just have to look to see it.  There are actually three options: Arc length, Object and Style.  Type "A" (for arc length) then press the Enter key.  You should be able to figure it out from there.

the first one failed on me, i did not know it posted.I already did what you suggested. 

So your problem is solved right?