Hi Tony, after reading Nigels post about IE9 compatability view and finding that my IE9 on my Win7 Comp did not have this, I thought perhaps my old XP comp would work so here goes. Hi Alan. If you normally park your' MH within about 30Mtrs of your front door then you may find that like me a Wireless Alarm System will give you peace of mind at least at home. I bought mine off EBay for £35.It came with Two PIRs, Six door or window Sensors, A main Alarm Panel & Two remote Operators. Batteries were also included. I am only using one PIR this covers the two cab doors and the habitat door. The other PIR could face down the van to cover the rear windows. The souder is loud enough to wake us but not to annoy the neighbours. With the Cat1 alarm and immobiliser as already fitted to the van, plus an home made Titanium Bar steering wheel lock this should give us more than enough time to see off any Toe Rags. The Main panel needs 230volts and mine is mounted behind my front door in full sight of the van and has many flashing LEDs to tell anyone that an alarm, not on the van mind you, is operating. If you loosley mount the main panel the whole lot can be taken with you to any site where you have EHU and used there. B43 At Last it works. Thanks for your help Tony, another post on "Talk"B43