What compensation surveys for high-tech wireless start-ups are the
most respected and purchased by engineering companies (this could be
survey's  Cisco, Proxim, Agere, Bay Networks, 3Com, Intersil,
Foundry, etc. used before going public or being acquired.)

The most respected group for compsation surveys is 
www.wmgnet.com
they do most of such surveys for network-industory and IT industory.
can read more on 
www.wmgnet.com/2002/ecex/eurocompexadv.asp 
Recent Participants
www.wmgnet.com/2002/ht/ht_part.asp 

following is a list of top 37 comp. sur. providers
http://www.businessatweb.com/Business/Human_Resources/Compensation_and_Benefits/Compensation/

provides detailed comp. surveys info on network-idustory
www.unifinetworksurveys.com/samples/ 2000Reports/Telecom2000.pdf 

try ... on google,
compensation survey cisco 
also with other companies
and 
"compensation surveys"

Wifi,

Check out the Radford Surveys.
http://www.radford.com/

They are not industry specific, per se, but allow for customization of
reports to give pretty accurate numbers.

claudietta