hi Jimboo, thanks for your very prompt response on this!
ironically enough, the original uc_subscribe module seems to have been discontinued (and that is why you were able to re-use the name) but i assure you it does exist (i am using it right now) and it's still a good idea to name yours differently, as you just did. this way there will be no more confusion 
cheers,
Fish
http://earthangelconsulting.com
ps: if anyone is interested in the source code for an improved version of the original uc_subscribe module (a full-featured subscription module for Ubercart 2.x on Drupal 6.x) please let me know and I will provide it.
