I need to know where to find or who to talk to about the latest
technology to accurately and quickly determine genotypes in a
cost-effective manner, starting from tissue sample prep and ending
with an accurate assessment of genotype, using SNPs or AFLP methods.

The main equipment & reagent makers are Applied Biosystems (see
http://www.appliedbiosystems.com/catalog/myab/StoreCatalog/products/ApplicationsHierarchy.jsp?hierarchyID=102&category1st=112370&category2nd=112375
for specifics), and Amersham
(http://www4.amershambiosciences.com/aptrix/upp01077.nsf/Content/autodna_software_genotype).

Good protocols can be found in Current Protocols in Human Genetics
(http://www.wiley.com/WileyCDA/WileyTitle/productCd-0471034207.html).
Many commercial services exist which can perform genotyping for you (a
lot easier than getting set up from scratch!). Here's one:
www.orchid.com, but there are many out there.

In terms of who to talk to, I can probably help a great deal, having
worked in the field, and can further put you in touch with some
heavies out there (have a look at my site to get an idea of where I am
coming from: http://users.rcn.com/ypouliot/Index.htm). Your call :-)

GOod luck.