We need to get to Reg Edit.
navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

then we double click on avgnt (in the right pane) then we add -:

/nosplash

at then in of the data string in place of

/min

REMEMBER it’s avgnt we are altering and nothing else!!!!

This is for XP, the string is slightly different in Vista – do a Google for ‘Avira nag screen’.

That is the way I’ve done it on my computer