Try this from the command-line...
avrdude -v -v -v -patmega328 -cavrispv2 -P\\.\COM5
Under AVRDUDE, no?
This line don't functions, I modified it so:
avrdude -v -v -v -patmega328p -cavrispv2 -P\\.\COM5
and I get:
C:\Documents and Settings\Gianfranco>avrdude -v -v -v -patmega328p -cavrispv2 -P
\\.\COM5
avrdude: Version 5.10, compiled on Jan 19 2010 at 10:45:23
Copyright (c) 2000-2005 Brian Dean,
http://www.bdmicro.com/ Copyright (c) 2007-2009 Joerg Wunsch
System wide configuration file is "C:\WinAVR-20100110\bin\avrdude.conf"
Using Port : \\.\COM5
Using Programmer : avrispv2
avrdude: ser_send(): write error: sorry no info avail