Hi, Just to confirm that there is no delete or record button on the B5. You have to select the file with the innermost button and select delete from the menue which pops up.
When you press Guide the Tv planner pops up. Find the programme you want to record and press the innermost button on the B5, this will bring up a list of options. Which include watch, record and record whole series.
I've also just had a quick play and this doesn't seem to work with programes that have already started. I'll have a think on how to get around this.