Need some customization to submitcontent

I currently use the submitcontent form on my site.
I've used the forums here and made some minor changes to the form but now that my site is getting more and more hits every day I really need some professional help with getting the form just the way I want it.

Here are is the things I would like done in the order of importance to me.
1. captcha on and working for guest but turned off when register user is logged in.
2. category drop down for section
3. Open form in a lightbox from menu link

Thanks

Hi,

I don't think that #3 is doable, from a menu link this will need a core Joomla hack if we are going to use the default Joomla menu module!

Max

I could do with out #3 that was more a sweet stuff idea.