help with destination input

[njpd875prv]

Hi i have got my vodafone vxp same as the o2 xda2 running with tom tom nav 5 I am having issues with typing, as everything works with touchscreen fine like menus but when I go to enter a postcode or address it does not come up with the little keyboard sign on the bottom left hand corner so you can use the onscreen keyboard. Anyone with ideas would me appreciated

thanks
nick