I find it hard to believe that "nothing" happens when you click Send/Receive in Outlook Express.
Perhaps it says "No new messages", perhaps it just goes really slowly or perhaps you get an error message.
If it is going really slowly there is a possibility that a very large attachment is "blocking the pipeline". The way to sort that out is to go into webmail and delete the offending email. Outlook (as opposed to Outlook Express) has the ability to just download the headers (titles) of the emails, which gets around this problem.
Apart from that, make sure MailWasher isn't causing the problem. Disable Mailwasher by going to Tools -> Options -> Load MailWasher Pro on Startup and removing the tick.
Go straight to Outlook Express and check your email account details. There are instructions at
http://help.orange.co.uk/documentDisplay.do?re sultType=5002&docProp=$solution_id&groupId=1&d irectSolutionLink=3&gotoLink=0&page=&clusterNa me=DefaultCluster&docType=1006&docPropValue=kb 79,%20kb9448,%20kb14545,%20kb21949.