Or just have VC7.1 open the VC6 project and let it convert, that is what I do.
Also, If you have VS2003, then that is version 7.1, not 7.0. 7.0 is horrible, not as much as like 6.0 horrible, but horrible non the less. 7.1 is the first near fully complient one, now one of the most complient out.