Tuning SQL*Server 2005 database, making query run faster for live website

I am looking for a qualified person (must be with prior experience) who can help me file tune my queries for SQL Server 2005. SQL Server is currently deployed for a live website (2.5 GB database space, growing at 10% every month) . As we have more and concurrent users, the performance of the queries are going down everyday .. I need an experienced person with deep fine tuning knowledge to consult me at the database optimization, recommend me the tools that I will need to fine tune the queries and make the application run faster. Very very frequently queries gets timed out ... So far I have never reorganized the database, neither I have rebuilt the indexes. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform SQL Server 2005