What is a good way to design a selector menu for different product lines?

How can I create user experience that lets user pick a product group?

Currently I have something like this but it strikes me as cumbersome.

^{download bmml source – Wireframes created with Balsamiq Mockups}

You have to

• click a small area
• Scroll down to your choice
• Click the choice
• Click the Submit button

all this for a single choice of the product line.

Question

Is there a better more industry accepted way?