Tablet on VirtualBox guest

If you're Linux user and you have Wacom Intuos3 tablet - it's obvious that GIMP will not satisfy your needs. Solution exists: you can download and install free VirtualBox, install WindowsXP as guest system and work with your tablet in guest system, installing your favourite graphics application on Windows guest.
I did those steps: installed VirtualBox 3.0.8 on my SUSE Linux 11.1, installed WindowsXP as guest. But I couldn't configure it - checkbox to turn on tablet in guest system was disabled (grayed out).

I spent few hours reading different forums and bugreports, most of them suggested to mount tablet as usbfs to your system, but it didn't worked for me. When I found solution - it was fast and simple:
1. Open your /etc/udev/rules.d/10-vboxdrv.rules as root. You will see something like this:

KERNEL=="vboxdrv", NAME="vboxdrv", OWNER="root", GROUP="root", MODE="0600"
SUBSYSTEM=="usb_device", GROUP="vboxusers", MODE="0664"
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", GROUP="vboxusers", MODE="0664"

2. Modify third line like this (adding name):

SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", NAME="VirtualBox/$env{BUSNUM}/$env{DEVNUM}", GROUP="vboxusers", MODE="0664"

3. Restart your system to be sure.

That's it! Now checkbox will be enabled and you will be able to turn on your USB tablet for guest system. VirtualBox will fail with error (something like couldn't create usb proxy device) but only 2 times, when pressing third time - tablet will be recognised by guest system and you will be able to use it. Of course you should also disable mouse integration and your tablet will no longer be available to your host Linux system, but what for do you need it there anyway?