My ISP will not let me upload the labels.rdf file
Most ISPs take the security of their customers' websites very seriously and take a number of precautionary measures. One of these can be to only allow certain types of file to be uploaded to their servers - and that list may not include files ending with .rdf.
The simplest way around this is to use an alternative name for the file. The following steps should solve the problem.
Step 1: Rename the labels.rdf file to labels.xml
Step 2: Within the link tag that you're adding to your web pages you'll see this:
That needs to change to reflect the new filename thus:
Apart from that, all instructions for labelling your site remain unchanged.