Sounds like you’re using Windows, so this might not apply unless you want to muck about with Cygwin and such, but I use the pfstools/pfscalibration toolchain for my HDR work. Some of the results are quite impressive, but you do have to do a lot of playing around to get things to look right.
I’m with ubernerd42 using pfstools/qpfstmo for tone mapping, though I’m also using Linux. The nice thing about pfstools, though, is that it has 7 different tone mapping options, though 3 or 4 of them seem to give the best results. Like he said, though, you need to do lots of experimenting with it.