This is exactly what you want:
<%
SET objFrontAd=Server.CreateObject("MSWC.ContentRotator")
FrontAdPath="adRotator/myAds.txt"
FrontAd=objFrontAd.ChooseContent(FrontAdPath)
Response.Write FrontAd
SET objFrontAd=Nothing
%>
And then in the adRotator/myAds.txt file enter something like:
%% 1
<a href="someURL.asp"><IMG SRC="myImage_1.jpg"></a>
%% 1
Any old HTML or text or whatever you feel like goes here. It cannot contain any ASP script though. <img src="thisPicture.gif>
Check the IIS documentation for more information on how to use the IIS ad rotator. It's drop dead simple and it works. Since objects are not script, they will work. Just enter the proper HTML code and you're good to go.
Cheers