If one were to build a custom module, speperate from the blog module itself but link to the blog, what is the best way to handle getting the full URL to an existing blog module so that one can link from the "top 10 list" to an actual blog item to display it?  I want to be able tto have a user click one of the top items and have it display the blog item as if it were clicked on directly from the blog list.

I ended up using the SQLGridView module from http://www.tressleworks.ca/ to create a custom query to get the top commented stories and basically hard coded the blog path into the SQL to combine with the returned query ID and Title.  The results are a moduel listing whatever blog items I want with a link to the blog item itself.  Works great with no custom coding needed.

Here is the SQl for anyone interested:

SELECT     '<a href="http://www.mydomain.com/News/tabid/55/EntryID/' 
+ cast(E.EntryID as varchar(3)) + '/Default.aspx">' + E.Title 
+ '</a>' as 'Recently Commented Stories'
FROM         Blog_Entries E INNER JOIN
                      Blog_Blogs B ON E.BlogID = B.BlogID INNER JOIN
                          (SELECT     TOP 10 EntryID, COUNT(CommentID) AS count_comments
                            FROM          Blog_Comments
Where addedDate > dateadd(dd,-28,getdate())
                            GROUP BY EntryID) C ON E.EntryID = C.EntryID
where 1=1
ORDER BY C.count_comments DESC