That said, this type of support work can be priced on a per-seat, per call or per minute basis. For a very ballpark range, pricing should be in the price per seat range of $28 to $40 an hour for average, level one gaming support. Naturally, the higher the technical skill level required, the higher the cost. Some high level network and ISP support services can cost up to $75 per hour.
There are two primary types of companies that do this work. The first are large outsourcers who scale easily and have good per hour pricing but tend to be inflexible and generally don't bid on volumes less than 100 seats. The second are smaller, custom shops that provide a very customized high touch approach but may be slightly higher on price per hour due to the low volumes.
While I cannot recommend a specific company, here is a list of several companies that offer the type of service you are looking for:
Precision Response Corp.
Since there may be others I'm not aware of, it may be worth your while to consider hiring a consultant to work with you.
This was first published in May 2001