The file you need to edit for Avast4 Home is called Avast4.ini. I couldn't find the RunningMode, Progress or TrayIcon in there. After having a poke around I've changed the below and I don't get the little blue box anymore. Someone correct me if I'm wrong please.
Skylynx might be fairly new to computers or directory structures. He might also be concerned it'll blow up in his face if he changes something he doesn't fully understand. My mum is just like that. Here's some very clear instructions that don't involve using Explorer.
[*]START / RUN
[*]In the Open box paste in:
notepad C:\Program Files\Alwil Software\Avast4\DATA\avast4.ini[*]Click OK (this opens avast4.ini in notepad for you to edit)
[*]Press CTRL+H to open the find and replace box
[*]In the Find What box paste in:
ResidentBalloonShown=1[*]In the Replace With box paste in:
ResidentBalloonShown=0[*]Click Replace All button (does what it sounds like)
[*]In the Find What box paste in:
VRDBBalloonShown=1[*]In the Replace With box paste in:
VRDBBalloonShown=0[*]Click Replace All button
[*]Press the ESC button on your keyboard to close dialog
[*]Press CTRL+S to save Avast4.ini
[*]Click the X at the top right of notepad to close it.
[*]Reboot the machine (yes...again).
[*]Popups should be gone.[/list]