Control Panel Problems and erratic mouse

Hi all
I have 2 little problems on 2 different machines.
First problem is with Windows XP Control Panel. For no reason (apparently) the admin tools and ODBC icons disappeared. Is there an easy way to resurrect them? To manage my IIS server I've got to go to manage my computer/services/etc etc.

The second is bizarre. Compaq Presario/Windows XP Professional, 1GB memory, 160GB HDD, ps2 Genius netwheel + eye mouse. Running Nod32, Adaware Pro, trojan remover.
The HDD have been defragged, memory the same, swap file deleted and rebooted, no trojans, no ads, no viruses.
When working on the desktop the cursor will suddenly move to extreme left of the screens and sit at an empty space - not over a button. A few minutes later it will again move, this time to the extreme right. Very annoying. Yes I've tried a standard Microsoft Mouse and it does the same.
Any bright ideas? :)
Jimmy