GCC3 w/ Project Builder on OSX 10.2.1

[Andrew Lefebvre]

For some reason, when I try to compile code that contains strings, the 
compiler gives me an error stating that the use of 'string' function is 
not valid and "use this function instead".  Im not quite sure why it 
does this, because when i compile the code on a unix box w/gcc, there 
are no errors.  is the header <string>, which is part of the STL, not 
included with OSX Dev tools, or am i doing something wrong?   thanks 
for the help.