SQL and Projectserver 2007

[TVH]

Hi! folks,


Which one should I upgrade first, SQL 2k to SQL 2005 first or ProjectServer
2003 to ProjectServer 2007 ?

Existing two machines:
1. SQL 2000 Server (OS Windows 2000 Server)
2. Project Server 2003 +WindowSharepoint 2 +IIS (OS Windows 2003 server)

Thanks in advances

TVH