It is with much effort that I get the SIGPro to work and now I have problems with Slimbox, Lytebox, or Litebox.

It opens to static image to the parent windows.

I am using the templates in www.joomlart.com/templates_club/club_portfolio/ja_nickel.html and a Moo menu.

Please help. I like the plugin for its simplicity but the customising portion is a bit disheartening.

Hi there!

Probably your template call the mootool ( or jquery ) js library, as the sig pro does.
This is the main reason of the conflicts.

You have to reduce those calls to one.
Remove the mootoo call from sig pro or from the template
but remember to leave the call that usually appears first!

Thank you!

That is correct. The JoomlArt-template includes mootools. So search in the forum how to resolve javascript conflicts. If I am right there is a tutorial/solution how to solve this.
Success.

Regards,
Peter