swaz1,
When you say 100-110, do you want to print multiple cards on one page, each numbered with a different number?
If that's the case, all you need to do is setup basic repetition and the counter will increment on each cards. For example, create a new form, and go to Edit->Preferences->Repetition, set it to 2 horizontal, 5 vertical. Set the priorities to:
3 Front to Back
1 Left to Right
2 Top to Bottom
Then create a text box with a variable, and use COUNTER(100) as the expression. Then if you print or preview, you'll notice the counter will be incrementing on every cards. You'll get 100 to 109 on the first page, 110 to 119 on the second, etc...
Hope that helps.
Regards,
Rapha