Perspective

I am trying to create a simple 'virtual kitchen designer'. The idea is people can look at the kitchen outline and select various door designs / colours etc and see how their preference will look on the model.
The problem is getting the .jpg images of the doors etc into the correct perspective so that they can be slotted in to the design.

I would apreciate any help, i have attached my outline kitchen design

I'm just dropping in to say hi. I'll look at it tommorow cause I have to go sleep.