I haven't read the one Chris mentioned, but I would recommend these:

http://www.amazon.co.uk/Microsoft-Server-T-SQL-Fundamentals-PRO-Developer/dp/0735626014/ref=pd_sim_b_7

http://www.amazon.co.uk/Inside-Microsoft-SQL-Server-2008/dp/0735626030/ref=pd_sim_b_3

http://www.amazon.co.uk/Inside-Microsoft-Server-2008-Pro-Developer/dp/0735626022/ref=pd_sim_b_3

That said, all of the books we just linked target SQL Server 2008. Although the fundamentals books will have good info applicable to all versions, many of the functions that people take for granted nowadays were not available in SQL 2000.

Windowed Functions, CTE's, Cross Apply, FOR XML Path... (the list goes on)... 2008 folks are spoiled.