I want my finished flloor plan 2Ddrawing to be at a scale of 1/2"=1'-0". But when it is in a viewport it's too big and flys off the page. It will only fit properly if it''s set at 1/8"=1'-0". How can I change this?I'm using AutoCAD 2008

What size paper are you plotting to?

I would want to plot to 24" x 36"

What size is the building?  Length and width.

It's 88' x 42'

Well guess what?  It is not going to fit on a 24x36 sheet.  The largest building you could plot on a sheet that size would be 48'x72' and that would be equivalent to plotting on the very edge of the paper which is basically impossible.  You'll have to change your scale.  I recommend 1/4"=1'-0".

Thanks for your time.

For future reference.If you are planning on plotting on a 36x24 sheet to a scale of 1/8"=1'-0" the sheet size is equivalent to 288'x192'.If you planning on plotting on a 36x24 sheet to a scale of 1/4"=1'-0" the sheet size is equivalent to 144'x96'.  In either case, the physical dimensions of your building(s) must be less than those dimensions otherwise you have to use a different scale as your building(s) will be too big to fit on your paper.