In reply to sbc_10:
There are a few (expensive) programmes that are more than capable of doing what you want to do, but as I say they are most likely too expensive, they also require you to know how to use the programme
I would recommend google sketch-up programme, which is free (as far as I know) and should be able to produce what you want to produce. You will have to spend some time playing around with it to understand how to use it. Also use it on a computer that can easily handle it.