I have been looking for information on the WAS 7 administration exam myself since early this year. I have yet to find anything.
I am starting my studying in earnest now and I am a little concerned that I don't see any private testimonials or discussions about this exam online. After Googling for a bit I thought I finally found something - only to open up my own post from this forum earlier this year.
After I take the exam I will make it a point to post about my experience (how hard it was, what prep I used, etc) and try to answer any questions about it.
I hope the lack of community discussion does not speak to the gradual obsolescence of this product...