Mouse Refresh Rate

I am using Logitech standard optical mouse connected to the PS/2 port. Although the Trails option is disabled I still get some trails. While not a [problem] after 6 or so years it's becoming rather annoying.I also understand that while the mouse is connected to the PS/2 prt the refresh or Sample rate can be reg tweaked to 200Hz which I have done, but it seems to have had no effect.I understand that the refresh rate could be increased to 500Hz by connecting it to a USB port, but that this can cause severe resources problems. Does anyone know if this is correct. Or if the Sample rate can be safely increased above 200 w/o blowing up my cute little mouse?I am using a Logitech standard optical mouse with XP Hone. I had to remove the manufacturers mouse driver has it was causing the options to freak-out, in particular the wheel that would constantly appear on the screen and entrap and lock-up the mouse.