Extron Electronics- Professional switching and interfacing equipment

http://www.extron.com

InfoComm International - Audio Visual Association (News on new products)

http://www.infocomm.org/cps/rde/xchg/infocomm/hs.xsl/index.htm

Projector Central - providing information on purchasing, specifications, etc.

http://www.projectorcentral.com/

Sony Professional - another professional A/V source

http://www.sonyprofessional.com/

Shure Microphones/Wireless Microphones

http://www.shure.com/index.htm

 Meyer Sound - Sound Reinforcement

http://www.meyersound.com/

Da-Lite Screen Company - Rear and front projection screen formats for your needs

http://www.dalite.com/