You're still opening yourself to a huge problem later on, though.
If you really want Apache 2, then grab the *source* package from RawHide, and recompile that.
If you start installing things from source, then your machine is no longer RedHat 7.3 in any way, and you mayas well give up ever upgrading it.
That's fine if you want to be installing from source for ever more, though.
Incidentally, there's precious little point installing Apache 2 unless you have a real need for it. The only need that most people are likely to run into is Subversion, at which point you've got to install from CVS anyway, which is *not* pleasant.