Is it possible to do this with Zen-Cart?

Hello! I'm selling batteries for laptops and run an online shop (oscommerce script).
I badly need two things:

1. The characteristic property of the shop is that one product is placed in many categories. For example: NB-802D battery suits for about 200 notebooks of different manufacturers. In the products catalog it looks like:
   Power for notebooks (Category 1) - Asus A2500 (Category 2) - NB-802D (Product)
   Power for notebooks (Category 1) - Asus A2500L (Category 2) - NB-802D (Product)
   Power for notebooks (Category 1) - Manufacturer X (Category 2) - NB-802D (Product)
   ... etc.

If a client enters in a search field the name (model) of his notebook - he gets nothing, as the search performs only in names/descriptions of products, not categories.
May be somebody had such a problem and knows the solution?

2. In Russia customers prefer to call and ask some questions first and then, as they have already called, make an order on the phone. As a consequence, shop operator has to enter orders under his login, then it is inconvenient to track them in Admin etc.
   Is there in Zen-Cart a "shop operator interface" (or contribution) which lets an operator enter customer's details and make an order for that customer?

Is it possible with Zen-Cart to solve that issues?

Yes and Yes.

1. Investigate "Linked Products."
2. Investigate "Master Password" (or "Encrypted Master Password"). Login as one of your customers, enter and order.

Good luck,
Scott

Swguy, tnx for Master Password idea!
About Linked Prodcuts:
Linked Product is a product that is set up to display in more than one category. And this is "built-in" feature in OSCommerce and Zen-Cart, right?
But if we try to search Notebook Model Name we gets nothing, because Product (model, name, descripion) do not contain Notebook Model names. Notebook Model names is a catgories.

But if we try to search Notebook Model Name we gets nothing, because Product (model, name, descripion) do not contain Notebook Model names. Notebook Model names is a catgories.
Add some information to the description that is searchable

... or perhaps to Meta Tags, which are also searchable.