Highest Def

I have done countless wordpress setups but this new project is out of my scope.

I need to do a few very specific things. I have one product to sell and it's a download. I also want to provide a support forum for anyone who buys the product. So, ideally I need a paypal/cart solution integrated with a wordpress register/login solution that also plays well with a forum.

Here's the scenario } Buyer visits site, pays for download and then receives download link along with support forum credentials. I have been googling all day and found some nice solutions that do a couple of the things but not all 3. Any ideas?

I like the way eStore provides encrypted download links and works with paypal but has anyone here used it? I don't mind paying for a solution I KNOW is going to work.

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