I believe the Express version also has this feature. Express primarily lacks all the nice tools that come with the standard and up versions but the IDE is nearly the same. There are a few minor differences but most projects would not be affected by them. One big issue that still stands is that MFC is not distributed with any Express edition of MSVS. There is a breakdown of the various versions on Microsoft's site that clearly show what features are available in each of them.
In the professional version, you can click on the function definition in the header or the function signature in the cpp and select to go to either to the definition or the implementiation. You can also find all references to this function or variable.