Any good ideas of what kind of rims to put on my black c230.And websites would be good also.

U should put some Tis 12 is u will rule the streets

There are websites, where you can actually see how your car will look with different rims. Google sites, which sell rims and some of them has this feature.
On another note, l wish l had your problems. What is wrong with original rims?. Well, l will never understand this obsession with rims.

checkout tirerack.com

l dont think any Mercedes needs a rim change, unless we are talking AMG rims, anything else that does not have a Mercedes brand in any visible part of the car really dimishes the look of the car.

But if you really want to change, id go for some AMG rims on ebay.