need help in linking the custom pages

I designed some custom pages for my installation and wants to link them as per the choice.
means if there is two choice on a page1 and if i choose first choice than page2 should open and i go for second choice than another page should open.

one more issue is i am not able to store the values which are given at the installation time like "user name", as i want to use it in some where in the script.

Thanks in advance.

Regards,
Nitin

You can dynamically skip pages using the Abort instruction. See the following FAQ item for more details.