I have been an O2 customer for years. This is my own holding page for links in the O2 system that I use.  

I have a Blackberry that I use with the O2 network. Despite their attempts to screw up the service (Blackberry not O2) I am still a fan. This page for setting your Blackberry email up on the O2 systems always seems hard to find whenever I need it. Hence its saved here:

There are similar pages available for other operators on the Blackberry site but non of them are obvious.