control page flow

My desire is to have an installer page with a radio for "new install" and a radio for "upgrade". If "upgrade" is selected, the next page is an "upgrade" page rather than a "new install" page. Similarly, if "new install" is selected the next page is a "new install" page.

How do I achieve this?

Calling Abort in custom page show functions will skip them.
You just need to store 0/1 in a variable and skip the pages depending on the value.

Stu