sure, happy to.
CARA is a stereophile product of the year, amongst other things.
Essentially, in it you model your listening room - including furniture, rugs, carpets etc.
You then provide areas in which you would be prepared to sit, and allow your speakers to be sited.
It will then advise what would be the most ideal setup for your hifi within those paramaters, and where you should sit to get the most even response.
It will also help you to 'model' changes you may make to the room - for example if you wanted to hang a tapestry on a wall in order to calm certain reflections - you can model it in CARA, and then get it to measure the response - before you go to the cost/effort of buying it.
It will take a few days to fully get to grips with the software, and the calculations are best calculated overnight (leave your PC running).
It's an amazing piece of software.
You can even use it to 'try' new speakers in your room (for example), before buying them!
http://www.cara.de/
NB
The 'shareware' version isn't a PATCH on the real thing, and really you need the complete, whole software.
I'd rather not go through all the things that I have found to be of benefit over the years, as this would turn into many pages of typing.
Hope the above is of use, anyway.
Cheers
Chris.