It is pretty self explanatory
<msntabdata><br /> <tab><br /> <image>Your site logo or thumbnail here</image><br /> <name>Your site name here</name><br /><br /> <tooltip>Exact Page Name Here</tooltip><br /> <contenturl>URL to Page You want here</contenturl><br /> <hidden>false</hidden><br /> </tab><br /> </msntabdata><br />
Of couse as Wando did you can add more sites with <tab></tab> tags to add more pages. That one thread explained how he did it. I am not much of an MSN user but I can see where alot of people would like this.