i tried to email some photos but it is too big and has been stuck in my outbox for 2 days.If i try and delete i am told i can't as it has aready started transmitting.How can i get rid of it as its blocking my outbox

Sadly, you told us NOTHING about your computer, version of Windows, the email program you are using or anything else. That leaves us virtually nothing to go on, but guesses.

Try canceling the send, then delete from outbox.

using windows xp and microsoft outlook. Tried canelling the sedn but wont allow it as already transmitting

Well, you still provide us little information - we don't know anything about the computer, what patch level for XP, or most importantly, what version of Outlook (and hoping you don't mean Outlook Express).

Let's see if one of these options work - Message stuck in Outbox | HowTo-Outlook