Web Development COMPANY Needed

We are looking to hire a web development company to do work for us on a weekly basis, what we are looking for: ) company that will provide us with the equivalent of 30-40 hours of work per week ) company that has a wide range of abilities, we need all types of programming aspects, from creation of php systems (simple systems) to installations and configurations of open source programs such as joomla ) as part of this we do not need any graphic design work, everything will be programming based ---- Please bid the amount that your company will charge per week to us as we are looking to find a reliable company to work with. We expect that you will do all jobs within a reasonable time frame == We are not looking to hire individuals, the reason is that it always works out that no one single person knows all of the technologies well enough that we need, this is why we need a company who can have a different worker work on each job if necessary (but still have the total hours worked between them come out to 30-40 hours per week) thanks