Thanks Bill,
I will give it a try
Quote Originally Posted by BillTodd View Post
Serif's Drawplus is a useful and accurate vector drawing tool with multiple export options, including DXF.

There's a free version here:

http://www.serif.com/free-graphic-de...mc=FSSDRAWPLUS

(They're a UK firm. If you register the trial version, they'll usually send you a substantial discount offer for the full version)