Sky Sport Tennis HD

open the ini in editor and follow the directions in the remarks section to create a updated channel list.
example
if you use
<update>c1-regions</update>
this will create a region list.
copy the channel line to your webgrab config for the region you want.

example
<channel update="i" site="sky.com" site_id="4101/1" xmltv_id="London HD">London HD</channel>
<update>c2-london-hd</update>

new channel list is created in your webgrab config directory.