This week's book giveaway is in the Performance forum. We're giving away four copies of The Java Performance Companion and have Charlie Hunt, Monica Beckwith, Poonam Parhar, & Bengt Rutisson on-line! See this thread for details.
It's probably not the "Java code" itself that's going to change - it's going to (possibly) be stuff like changing database connection information, and SQL queries. Now as for how much change - I don't know... I'm not sure how much changed between SQL Server 2000 and 2005.
Write once, run anywhere, because there's nowhere to hide! - /. A.C.