Alchemy Mindworks Font Wrangler not working in batches

Hi there,
I have installed a lot of TrueType fonts on my desktop and I can't keep track anymore. I need to manage them so I installed Alchemy Mindworks Font Wrangler Version 2.0v. I can now preview the fonts and change font names but I can't remove them in batches. Why is that so? I'm on Windows Vista 64 bit.
Thanks.
