Anyone that has the standard head unit set-up (gamma) that came with the vehicle you wont need a radio code if you disconnect the battery, the radio will sense that its in its rightful car and re-code itself.
If not take a trip to VW and thay will tell you what the code is for future reference for free.
To Remove:
You need to removal keys Thay can be purchased from halfords for £3.99
You need the Euro ones.
Put the keys into the 2 slots with the hooks facing outwards and pull out.