Computer Room Design

i am a teenager planning to go into the interior design business. i have already decorated some rooms in my house and friend’s house. Many people say i already have talent and the eye for interior design. I now want to use a good program to further my talent. Do you guys know of any?

price does not matter…

I have a camera and would like to be able to take a picture of the room and change the wall colors. I’m considering painting but would like to see how it will look.

Thanks

I really like watching HGTV(and no I am not gay) and I saw the show where the guy takes homes and virtually re-do’s them. I thought “Hey that’s cool,” and I downloaded a free interior design software called Sweet Home 3-D. First, I want to know if you know of any better(or other) softwares, but they must be free(i’m not going to buy one YET). Second, I want to know how big a normal home is.

I want to be able to take digital images, import them onto the pc, then make changes to the room to better visualize and tinker with ideas such as colors, changing a window into a door(much more complex than just changing colors there!) and little thing even like carpet etc. Everything out there allows you to change colors of stuff, but I want to find something that will allow me to see what our fireplace would look like with the stone off of it, and a colonial style mantle, and removed window for exchange of french doors opening to a newly proposed deck.
Is there any software that can do this? Photoshop MIGHT if you take a long time and find enough sample material to put in there, you probably could get a rough idea, but all the design software out there is just 3d software that isn’t really YOUR room per se. 3d and real are two totally different things after it’s all said and done..thus my reason for wanting to use real images to edit.
*** I’ve already done exhaustive searching on interior design software. None allow you to import your own images (other than stupid things like flowers, colors etc). I need something that can edit MY images to see what MY space is REALLY going to look like. I already have 30 - 3d software programs that can do room layouts and computer generated visualizations of the project at hand…I need REAL world visualization.

I need a software (a free one) to decorate my room.

I want to design a room, but can’t afford to buy any software right now. Are there any websites that I can do this at?