Question about Selection Tools

I hate having to post another question, and I searched the memories first, but, no dice.

In Photoshop CS, is there a Selection tool for a Rounded Rectangle? There is in PSP, so lately I've just been using that whenever I need a rounded rectangle. But I was hoping I'm just overlooking something. For me, the only selection tools I have are the rectangle, eclipse, and single line/column. Is there somewhere I can download more? Do I have to use another tool for a rounded rectangle?

Somewhat related, is it worth upgrading to CS 2?