Confused about setting up attribute to handle multiple model numbers

I am using the current version of Zen Cart and I have checked a lot of the posts and I am still a little confused about this issue. I have like so many others, a few products that have multiple model numbers. And instead of listing the same product/description etc. for each model, I want to set up one product listing with an attribute to pick which model is needed.

So is this possible?

Hope image makes thing clearer as to what I want to do!

And if so, is this the correct steps to take to set up?

First thing, backup the data base.

Goto: admin > catalog > option name manager

Step 1.

Pick an option name example: Model
Pick option type: dropdown, radio button, checkbox etc. (I using radio buttons)
Then hit insert button

Step 2.

Hit option value button, and then select your option name which is: Model
Enter a name for the radio button etc.
Pick the default sort order
Then hit insert button
Repeat the process for another radio button - at this point do you set up all the different model numbers that will be used. I have about 20 for 10 different products. But only using two model numbers per-product

Step 3.

Hit the attribute controller button
Select a category or product
Select option name: Model
Select option value: model number to be used
Hit insert button
Repeat the process for other radio button

So at this point can I pick a different product, use the same option name: Model, then use two different model numbers? (Option value)

Example:

Product #1

model: XXXXXA
           XXXXXB

Product #2

Model: XXXXXC
              XXXXXD	

Hope I have explained myself, so that you understand what I want.

Zencart doesn't support unique model numbers for attributes yet. Next version, I think.