T-SQL (SS2K8) :: Transactions And Tracking Within While Loop?

I am running the following query, which deletes around 800 million rows from the table.

I would like to introduce transactions with in this code and also, if success entire deletion process should be committed and number of rows deleted, table name and success should be inserted to the log table.

If there is a failure, transaction should be rolled back and table name and error message should be inserted to the same log file

Select 1
While @@ROWCOUNT > 0
Begin
DELETE Top(100000) FROM [dbo].[Table1]
FROM [dbo].[Table2]
INNER JOIN [dbo].[Table3] ON [Table2].[PracticeID] = [Table3].[PracticeID]
INNER JOIN [dbo].[Table1] ON [Table3].[InputDevicePracticeID] = [Table1].[InputDevicePracticeID]
WHERE [Table2].PracticeID =55;
End

how to achieve this?