Hi John
Forgot all about this but yes it is still for sale. How you mount this depends on your setup. Optec have a heap of options which would be worth looking at first to see if it can be done. You have about 2.39 inches to play with. See here.
http://www.optecinc.com/astronomy/nextgen.htm
http://www.optecinc.com/astronomy/nextgen_mounts.htm
Mark