wxPython app looks old when compiled

I've made a simple application that works just fine when I run the python file. I can also compile it fine using py2exe and pythonexe. The only problem is that when I compile it, it has an old look to the interface. It loses wxPython's 'XP' type look. The rounded and colored titles of the groups(wxStaticBox), and also the rounded nature of the buttons. It looks like I've taken a trip back to Windows 98. Any clue to why this is happening? Any help would greatly be appreciated! Thanks!