You can do "Page 1 of 4" quite easily.
Step 1: Create a global number field (g_total_pages).
Step 2: Insert the following into your script before displaying the form
Freeze Window
Enter Preview Mode (NO Pause)
Go to Record/Request (last)
Set Field (g_total_pages, Get(PageNumber))
Go to Record/Request (first)
Enter Preview Mode (Pause)
Step 3: On your layout, enter the following:
Page ## of <<g_total_pages>>