[Boost-users] RNG, operator<< and VC7.1

I'm trying to save the state of the random number generators to file but for some reason VC7.1 doesn't seem to be able to find operator<< (or operator>> when i need to read it back in). Anyone else had this problem? Is there a solution other than going in to the header file and creating a read and write function that contains the same code as the streaming operators? I.Whittley