The website might not say, but searching online and in these forums would have revealed that it's impossible to partition the Time Capsule without voiding your warranty and physically opening it up.
Also, the Time Machine software is only for Mac OS X (Leopard/Snow Leopard) and backing up a PC to a Time Capsule would require third party software (can be done).
Lastly, it's extremely easy to integrate a Time Capsule into your home network. A little more information about your desired setup is required to provide any specific instructions.