interogating a worksheet

[Jag]

Hi
I have matrix with Partnumbers of products in rows and the column headings
are devices in which the products either work or not.

I want a macro that ask customers to select Product(by partnumber) using a
combo box and then select ,using combo box, the device. Once they have done
that they should instructed to press a command button which would take them
to the intersection of the partnumber and the device.

I hope this is clear and some one can help me.

Thanks