MIMF

You could try DoubleCadXT which comes from the same people that do TurboCad, IMSI.

Version 3 is the current one and if I remember correctly you get to use the Pro version for a short time before it reverts to the free version.

I'm on Windows 7, 64 and DoubleCadXT works fine on that.

When I was researching workbenches I came across this.

http://www.michelinie.com/luthiersbench.html