How to create solutions in VS 2010 for sharepoint 2007?

Hi Wiliam,
Working with Visual studio 2010 is almost similar to the visual studio with lower version.Visual studio2010 introduce mapping of "sharepointroot" folder instead of direct "12" hive folder.So if you want to create a webpart or any custom feature.
1.create webpart by simply going to New->New Project->Select empty sharePoint project.
2.Right click on solution and add new->select webpart.
3.Now simple write your code for webpart.
4.Build your project.
5.Create package(.wsp) and deploy your solution.

Please let me know if you need some more clarification.
Thanks
Ravishankar Singh

refer might helps..

http://epmsource.com/2010/03/25/enable-backwards-compatibility-mode-on-a-fresh-project-server-2010-install/