O2 Wireless Box IV (Thomson SpeedTouch TG587nv2) router - can I use it?

[#1]

I intend to use my old  O2 Wireless Box IV which according to Wiki is a rebadged Thomson SpeedTouch TG587nv2 for my broadband connection. I've tried it with my current SKY broadband and it works fine just by plugging it in place of my SKY router. Will this work with plusnet and what settings do I need to know (if any) to use it?
Thanks

[#2]

O2 broadband were taken over by Sky (as was BeThere) and arrangements were made to ensure router compatibility.
I'm pretty sure Be routers were not unlocked, just that the Sky network was reconfigured to support them........
O2 devices may well be the same.
I moved back to PN from Be because of the takeover and didn't even try to use my old Be router, just took a "free" PN one.