Dave,

Beecher Instruments website is www.beecherinstruments.com for product info.

Christine Bromley at bromley@uihc.iowa.edu may be using the technology by
now, and the person who developed the technic is at UCSF, Joe Derisi

Christine gave me a reference:

Bubendorf L, et al, Survey of gene amplifications during prostate cancer
progression by high-throughput fluorescence in situ hybridization on tissue
microarrays Cancer Res 59:803-806, Feb 1999.

There was a poster at NSH 2000 on this technology, check out authors and
contact them. 
Gayle Callis
Veterinary Molecular Biology
Montana State University
Bozeman MT 59717-3610
406 994-4705
406 994-4303