Trouble with gzip, ASP, and IIS7.5

Hi,

I’m using IIS7.5 with a classic ASP shopping cart script, but having trouble gzipping some of the pages. I have dynamic and static compression enabled in IIS, but when I check this page:
SAM4s Cash Registers - Free Software and SD Card - Discount Pricing – Cash Registers Online It doesn’t say gzip for the encoding and the page size is rather large. Our home page, www.cashregistersonline.com, appears to gzip correctly, so I think it’s something to do with the dyanamically generated pages. I think I have the MIME types configured correctly in IIS to match up with compression. I noticed that there’s a line in web.config pointing to gzip.dll, but I don’t see that the file actually exists on the system (Windows Server 2008).

Any help is appreciated.

-Chris

Edit: I see that gzip.dll does exist, still no dice with compressing dynamic pages.