well let's go to the point. at CodePlex site sps geeks have been published a collection of awsome tools for Moss 2007 development.
It is SmartTools.
Actually i dowonloaded "What's New" webpart for "jantielens" with the source code.
- While testing it, i found a problem :
"List of content types" didn't work correctly.
To fix this problem.....@ the source code itself:
1- Inside this method " private string GetQueryContentTypePart(string contentTypes, ContentTypesOptions option) "
2- Replace the "Switch" statment with code mentioned here.
I hope this will help.