Also are you using the public installer or did you compile yourself? Looking at the error log there and why mod_portaudio doesn't load the issue is the fact it is unable to find any input device on your system. Do you have a microphone or other input device that shows up in the windows sound control panel?
~Mitch
----freeswitch.log----2011-02-05 23:33:48.934072 [ERR] mod_PortAudio.c:1191 Cannot find an input device2011-02-05 23:33:48.934072 [WARNING] mod_PortAudio.c:1199 Switching to default output device2011-02-05 23:33:48.934072 [WARNING] mod_PortAudio.c:1208 Invalid ring device configured using output device2011-02-05 23:33:48.934072 [CRIT] switch_loadable_module.c:928 Error Loading module C:\Program Files (x86)\FSClient\mod\mod_portaudio.dll**Module load routine returned an error**--Yitzchok