Time Capsule as Wireless Ethernet hub?

Forgive my newbie-ness, but i could do with some help with my Time Capsule.

I currently have a Sky provided D-Link modem router that provides my wireless internet (in my lounge, as this is where the phone line is), and the Time Capsule sits nicely out of the way in my kitchen, wirelessly backing up via Time Machine.

My wife would like to sit in the kitchen and work on her laptop, but her company's IT policy means that she can only connect via Ethernet. Currently she has to connect to the D-Link in the lounge and sit on the floor.

Is there a way of connecting her laptop to the ethernet ports on the back of the TC and then wirelessly connect to the internet?

 

thanks guys