Adding fileds to create_account.php?

[bsa]

Hello,

I run a wholesale site and I want to collect additional information from my users for the address book. Specifically, I want to collect their EIN/Taxpayer ID, and their Sales person name/ID. How do I make these fields required or not? Where do I have to edit/add these fields, create_account, edit_account, and somewhere in admin?

It would be great if I could give them a coupon code that would automatically be applied to their shopping cart as well, but I will be happy with info on the first question.

In order to avoid two stores, one retail and one wholesale, I simply give my wholesalers a coupon for some percentage off of the retail pricing and I don't charge tax. This means for in-state sales I lose 7.25%. Is it possible for a coupon to remove tax?

Thanks,
Brad

[jpf]

There are a number of contribution that handel TAX number collection/exempt and price discount or price by groups (ie: retail/wholesale).

Have look looked at any?