Apogee's fax number is (972) 278-4670.  Be sure to include a return fax number.
This number may also be used to contact one of Apogee's specialized divisions
such as 3D Realms.  Note that while the fax line is open 24 hours a day, the
people who reply aren't always there; so if you're faxing when it's the middle
of night in Texas, you probably won't get an immediate reply.