An article Andrew Connell worked on hasrecently been published to MSDN. The article, Real WorldBranding with SharePoint Server 2007 Publishing Sites, walks designersthrough the process of creating a custom brand in SharePoint Publishing sitesas well as helping developers take the design and implementing it as a custombrand using Features and Solutions.

Here's a summary on whatthe article is all about:

"Microsoft Office SharePointServer 2007 publishing sites make use of the Office SharePoint ServerPublishing Features to provide capabilities for creating engaging Web contentmanagement (WCM) sites. Frequently used as Internet-facing Web sites, thesesites require the use of custom-designed user interfaces to establish an onlinecorporate identity. This process, whether it is used on a traditional HTML pageor in Office SharePoint Server, is known as Web site branding. Publishing sitesmake use of master pages, page layouts, Web Parts, and CSS to enable designersand developers to create branded Web sites that can rival the designs of manypopular Web sites today. This article focuses on the mechanics of properlyplanning and creating a design for an external, Internet Web site by using apublishing site. The article uses as a specific example a fictitious travelcompany, Adventure Works Travel, which needs to create a heavily brandedSharePoint site. Figure 1 shows this publishing site."

Sharepoint End User Content Team writes an article that describes "How to create custom Sharepoint site theme". Nice article!

http://sharepoint.microsoft.com/blogs/GetThePoint/Lists/Posts/Post.aspx?ID=122 

You can remove the home link from view with CSS.

The code for your alternate CSS file is:

td#zz1_TopNavigationMenun0 {
 display:none;
} 

Heather Solomon posts a new trick about altering Sharepoint menu's second level navigation arrow. Here are the steps :