I sort of swiped the specilization rules from TimeLords and CORPS.

A character can have a subskill aat a rating up to 1/2 the main skill. THe subskill adds to the main skill.

Players don7t fell like they are being penalized for specialzing, as the subskill is at a lower value and thus goes up faster. In fact, it is worthwhile to specialize if your skill score is over 50%. Plus there is nothing to prevent somene from getting checks in both the main skill and the specialty during the coruse of an adventure.
nice idea. I think I will use that and set up a short skill list with attached specialisations. Thanks for the input!