1) Your browser has no java support (in this case you will NOT see the IPIX logo)
2) Your IIS Server is not configured to serve these files:
i) Right click the website in IIS > Properties
ii) Select the HTTP headers button
iii) Add a new MIME type with a .IPX extension and MIME type of application/x-ipx
Hope this helps someone - it drove me mad for 2 hours!