Just a couple ideas that might make things easier for you guys as well as your customers:
1. Add the option (when applicable) to add commonly provided services (namely overclocking, its expected average overclocked processor speed, and apportionate cost, though i bet there are other services commonly requested,) so that the price shows up in the checkout page.
This would greatly facilitate ease of purchase, increase clarity, and allow for easier review by sales staff to make sure build setup is adequate for cooling/compatability.
2. Provide options for gaming devices such as keyboards (ie. Steel Series merc stealth gaming keyboard gaming mice (ie. Razor naga epic gaming mouse headsets (ie. Creative Fatality gaming headset and gaming controllers (ie. Logitech driving force gt racing wheel.)
While i do realize there is an inherrant cost with this, (namely purchase cost of a few of each item for testing and the labor/man hours to effectively r&d and durability/compatability test each one it would be of great benefit to both your company and a large percentage (35-45% or more, though this figure is speculative as i do not have your sales figures,) of your new customers that fall into the casual-avid gamer category. The vast majority of us who purchase products from you do so because the quality, reliability, tech support, and customer service of those products easily warrants the increase in cost (15-40%) over what we could get a similar system for eslewhere. I have no doubt that any gamer who uses your site would pay an additional 15-20% or more to get these items from you knowing they had been through your exhaustively thorough r&d and testing phase to get your vaunted seal of approval, the additional tech support and customer service notwithstanding. I myself would pay up to 50% more than a competitors price if I could get it from puget, having the peace of mind that: 1. It works as advertised. 2. Its compatability and durability have been thoroughly tested. and 3. Most importantly, if theres a problem I can contact Puget for help.
The benefits of doing this is two-fold: 1. Customers can feel secure purchasing their peripheral gaming devices. and 2. Without a relatively large overhead, It increases your appeal to new customers, as well as garnering additional sales from returning ones. Both Puget and the consumer benefit from this.