My car was splattered with cement.
 The cement was not discovered until it was dried.

How do I remove the dried cement splatters without damaging my cars painted finish?

You may try Miratic Acid which will clean the splatters. 
It can be obtained from Home Depot.
More Info: http://www.imagescarcare.com/qa.asp (see Q 7 & 8)

OR

You may use distilled white vinegar (a mild acid)
More Info: http://www.howtocleananything.com/tipdetails.asp?tid=922

Keyword:

'remove cement from car'

Here is another link to a similar question.

http://answers.google.com/answers/threadview?id=65719