Ok, thanks for everybody's help on this btw. I have some sort of news, dont reckon its good tho
I'm on 56k dial-up and i d/c to use my phone and got...for the first time ever...a red pop-up box saying that there was a problem updating because avast couldnt connect to the server. I re-connected to it and left it on, for ages. Nothing has happened since, i have 'dial-up' box checked, i have my proxy correct in IE so that part is right, i have changed updates to manual and now when i click the avast icon in the tray on my desktop and go to update, it wont do anything! I get no screen, no nothing!
I don't know if altering the time thing in the code will work either if it has anything to do with how long you're connected for, cos the idiots at my uni cause the connection to be terminated every hour or so.
Sarah-E