I just finished installing it in Win 7 Pro using Parallels on my Mac... worked fine. I am also about to install it on Win XP Pro SP3, also using Parallels.
I'm avoiding 64 bit, that may be your gotcha with Win 7 (so compatibility mode is a good suggestion from Jack).
The ETKA  .ISO I have is 7.0 Update 597.

I have read about the problem you're having in a few places, seems that it's been around for years. Check this thread for some suggestions
http://z13.invisionfree.com/OneTrueKeyboard/index.php?showtopic=66
(look for kyoo Posted: 2007-04-11 12:19:26)

Regards, Peter Kraiker
kraikerphoto.com / studiofstop.com
Toronto, ON, Canada
'82 L Westfalia 1.9 TD 5 Spd (Babe)
'05 Jetta Wagon 1.9 TDI 5 Spd (Blue)

On 2010-10-30, at 11:16 AM, Karl wrote:

> Has anyone had good success installing ETKA 7.0 on a Window 7 machine? I'm having a bit of trouble and lack of access to the program on my new PC is becoming a daily issue. Thanks for any advice or help.
> 
> Karl