Yes you can, right here:

http://www.microsoft.com/downloads/details.aspx?FamilyID=67f93dcb-ada8-4db5-a47b-df17e14b2c74&DisplayLang=en

A great app from a fellow MVP here called metaman that does just that!
"BDC Meta Man is the only application that provides the ability to create Application Definitions for the Microsoft Office SharePoint Server 2007 (MOSS) Business Data Catalog (BDC) without writing a line of code. No programming experience is required to take full advantage of the BDC Meta Man. As long as you know how to use a mouse and a keyboard, you can easily generate Application Definitions with BDC Meta Man!"

http://www.bdcmetaman.com/default.aspx

It's all here:

Microsoft SharePoint Products and Technologies Document: Microsoft Office Programs and SharePoint Products and Technologies Integration – Fair, Good, Better, Best
Brief Description
This white paper describes how different versions of Microsoft Office programs work together with the 2003 and 2007 versions of Microsoft SharePoint Products and Technologies.

http://www.microsoft.com/downloads/details.aspx?FamilyId=E0D05A69-F67B-4D37-961E-2DB3C4065CB9&displaylang=en

Yes you can:

http://blogs.msdn.com/ifilter/archive/2007/05/10/long-awaited-64-bit-pdf-ifilter-finally-available.aspx

There is even some information here on how to get it working with MOSS 2007.

Heather´s site is the best staring point for this:

http://www.heathersolomon.com/content/sp07cssreference.htm

An excellent solution is http://blogs.tamtam.nl/mart/QuickLaunchWebPart.aspx

This Quick Launch Web Part is a huge improvement on the default.

An excellent solution is http://blogs.tamtam.nl/mart/QuickLaunchWebPart.aspx

This Quick Launch Web Part is a huge improvement.

http://www.sharepointforge.com is a repository for hosting SharePoint projects built by and for the SharePoint community.