help with custom memberlist please

[AFemaleProdigy]

I am creating custom memberlist pages and could use some help. I was familiar with the old vB code prior to the publishing suite, but things are different now.

I want to create a custom member list that will show members from a specific usergroup ID only. Then I want to specify which custom profile fields will be displayed (different from the default memberlist display).

So, I need to know the code to call users of usergroup ID "x" and load custom profile fields by specific ID "x,y,z".

I don't need all of the code for the memberlist template. Just the bits that I need to add or edit to make the content more specific.

Thanks for the help!