Display Category by Zip

Is there a module that I can setup to display all categories if a user is viewing as a guest and after they login will only show the categories That I specify via their zip code?

If not is there someone that can create that? If so, How much?

Version? Categories or products or both?

I don't recall one; but authors will now see what you have in mind.

I currently am using 1.5.6 and yes I would like to disable or not show any of the products within a given parent category. Something within the category setup area on the admin side I could go thru and select which zip codes would be allowed to see them. The logged in user would then be able to only order form their "shipping" zip code. I already have the prices hidden if they are not logged in to promote them making account before they try to order things.

Thank you very much!