Cloak Media offers many services, and simple Windows XP integration (setting up a printer, networking, shared storage, etc.) into the Mac OS X environment is one of them. I know there are certain vertical applications that only run on Windows XP or Windows 98. On the Mac, Microsoft has VirtualPC, but it does not operate as fast as a true PC, since every service needs to be emulated. There is nothing like using an actual PC, but also expect the standard PC headaches, like viruses, spyware, malware, and regular instability.
I choose to concentrate on Apple Mac technologies. You can focus on what’s important, the applications and the workflow, not trying to get a square peg into a round whole, as is often the case on commodity hardware from the traditional Windows/Intel (Wintel) world (looking for drivers, registry fixes, scan disk, etc.). It’s worth a little more money upfront to get a system that works out of the box, without a lot of futzing, and that’s why Cloak Media works primarily with Mac OS X and Mac OS X Server.
Likewise, support costs are dramatically reduced on the Mac, since it does not break as often. In the history of Mac OS X, there has not been a single virus in the wild, but only theoretical attacks.