How do I make that a Form A press on the screen data from another form in various fields?

How do I make that a Form A press on the screen data from another form in various fields?

Hi
How do I make that a Form A press on the screen data from another form in variousfields?

For example:

The Form I-Product

I want it in another form I select from a combobox the product name and thenautomatically loads itself into other fields all information of the product for which Iselected the name.

Thanks