New Application Templates for Windows SharePoint Services 3.0

All of them are released.
Download them here...

WF, WCF and CardSpace training materials

.net 3.0 community site has some new training content about 3.0 Framework.
Check it out here.

Custom Master Pages in WSS 3.0
After you edit your custom master page for site skinning, the next step is to configure your site to use it.
For creating a custom master page you can use one of the following links as templates;

• http://msdn2.microsoft.com/en-us/library/aa660698.aspx
• http://heathersolomon.com/blog/archive/2007/01/26/6153.aspx(recommended)

After you have downloadeded the master page go to your wss 3.0 site which you will change the master page.
Click on Site Settings -> Master Page -> Upload
and upload the custom master page you have downloaded previously.

After you have uploaded the master page the rest is easy.
Open Sharepoint Designer 2007, open your site, goto _catalogs -> masterpages.
Right click on your masterpage and choose "Set as Default Masterpage".
That's it.

I am looking for how to set the custom master page without the use of Sharepoint Designer,
will post it here.