Dynamic Fields for Drupal Content Type

Question

I have a product, and I want it to have many changeable attributes so I did it with Taxonomy,
now I have a list that holds "price, color, shape",
how do I let a user choose from it within the "add product" page and let him write a color for instance?

UPDATE

I found something called Taxonomy Field.
That is almost exactly what I'm looking for.
It lets me have a list of taxonomy which I use as attributes
and even lets the user create new ones.
One thing is missing - I want a text field to be created for each attribute
the user chooses.
for example:
Attribute: Color     Value: White
so the attribute Color is a Taxonomy field and the value is simply
an empty text field created for it (I can't just add a text field because
the number of attributes is dynamic)

SOLVED

In the new Beta version of CCK there's a group
type that's called "MutliGroup" that does exactly what I wanted.
Turns out this issue has been discussed a lot and it seems
that they are adding it to the new CCK3 which would be stable
on Drupal7

Answer 1

Drat, a whole answer then I reread the comments.

That answer boiled down to Autocomplete Widgets for CCK Text and Number, which is still a neat module to know about.

For the sort of hierarchical structure you describe with dynamic field availability, it sounds like you want some sort of javascripty hierarchical selection mechanism. Like, say Hierarchical Select.