Congrats to you also, the MCITP was my primary goal ever since I became a DBA back in Jan last year and after failing it the first time round I was determined to pass this time.

I'd definitely recommend to anyone studying for 70-450 to set up a dedicated SQL Server test environment with at least 2 servers that will allow you to play around and actually practice setting up things like replication, mirroring, log shipping, distributed transactions etc. A theoretical knowledge is all well and good but nothing is as good as a solid working knowledge of those technologies and the various situations to which they apply (plus you can re-use the testing environment for future projects afterwards).

Next exam for me will be 70-433 (SQL 2008 DB Development) - best get studying again I guess!! 😀