customizing a car

hey guys i just turned 17 so im looking at cars and i want to see how they would look with tint and rims. if someone can help me i would really appreciate it. basically what i have to do is erase the previous rims and put on the new ones on top and i have to resize the rim perfectly, etc. thank you!

to tint teh windows, check google. There are loads of tutorials, I'm sure.

As for the rims, you don't need to erase anything, just paste the new rims on top.
To get them in the correct perspective, just use the distort function. Be sure to to get a pic of rims that are in the same (at least, somewhat) angle as the shot of your car.

Good luck.