Need upgrade/update advice/procedures: Cygwin32 to Cygwin64

[Mike O'Brien]

My first and only post —

I would like to upgrade/update/switch from Cygwin32 to Cygwin64 (on Win 
7x64, sp1) and I'm not so sure what all the likely pitfalls may be. 
Would appreciate any pertinent advice, informational links, etc. that 
experienced users may wish to share. I've searched around and pieced 
together a few insights, but I would be remiss not to ask here...

TIA.

Mike O'B.

-- 
Mater mea, et are Hibernica Pater, et Ego Hibernica quoque!