Any Membership Ideas?? HELP!!!!!!

hi, i have a site, that uses "interspire" email software to manage a squeeze page. and i have a zen cart store that visitors are redirected to after confirming their email address, (which they have to sign up to become a member of before they can make a purchase), and i also have a forum (phpbb) that users can go to for help and support and faq's, and also Jam affiliate for a affilate program, now...
MY QUESTION IS: can amember streamline the process so when a customer fills out our squeeze page and clicks on the confirmation link in their email, a username and password are automatically generated and emailed to that person which they can then use for our zen cart store, and our forum, while adding their name and their email into the member database of jam affiliate and zencart as well as their username and password.

I'm not sure if there is another program that would work better for what i'm looking for than amember, or if you have any suggestions,

I am open to any and all ideas.

any help would be greatly appreciated.

aMember does seem to be the standard in this area. Yes, you can write some glue-ware to bind all these systems together, but it would be all custom work and if you can't do it yourself, you'd need to have a significant budget.