Force recognition of mod_rewrite?

My host has installed this module on their Windows server:
http://www.helicontech.com/isapi_rewrite/

Apparently I should be able to use (essentially, not exactly obviously) Apache mod_rewrite and .htaccess files. However Gallery sees that I'm on a Windows server and doesn't give me a choice to setup the URL Rewrite using a .htaccess which is what I would really like to do. Is there some way to force it to recognize this module or even get into that section of the URL Rewrite to see if I can set it up functionally?

Gallery version = 2.3.2 core 1.3.0.2
API = Core 7.54, Module 3.9, Theme 2.6, Embed 1.5
PHP version = 5.3.9 cgi-fcgi
Webserver = Microsoft-IIS/6.0
Database = mysqli 5.5.17, lock.system=flock
Toolkits = LinkItemToolkit, Exif, Gd
Operating system = Windows NT HOST414848 5.2 build 3790 (Windows Server 2003 R2 Standard x64 Edition Service Pack 2) i586
Browser = Mozilla/5.0 (Windows NT 6.1; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0