Hi. I can not see the drawing area when DS is loaded in 64 Bit Windows 7

Hi.  I have successfully used DS on my PC with 32 Bit XP.  My PC has now been installed with the 64 Bit version of Windows 7.  Now I can not see the view area in DS.  It is just grey and the cursor is not visible in it.  I can not make a drawing or view old drawings.

I have noticed that other people have mentioned this issue, but I have not seen any answers that solve the problem.

Please help