ASP Page Treated As Plain HTML

I have a simple ASP page (named iisTest.asp) with these contents (I've embedded spaces in the tags for this post):

< % @ Language = "VBScript" % >
< html >
< body >
Hello
< %=World!% >
< /body >
< /html >

When I load the page into IE 6.0 it only displays "Hello". If I View Source from the browser I get all of the above, which means it's not being processed by asp.dll before getting sent to the browser (otherwise I shouldn't be seeing the ASP lines).

I asked one of my co-workers to try it and it displays "Hello World!" for him. This leads us to believe the problem may lie with IIS on my machine. (I'm using IIS 5.1.) I checked out my IIS and couldn't find anything that would cause this problem.