Original Strife Dialog Format

"long" is defined to unsigned little endian 4 byte integer.  The following is 
for a page.  They are numbered automatically per actor.  The lump is just these 
pages repeated until the end of the lump.

0   long        Actor's conversation ID
4   long        Conversation ID of thing to be given to the player.
8   long        Conversation ID of thing to check in player's inventory.
12  long        Second inventory item to check.  IIRC this and the next are not 
                used by Strife.
16  long        Third inventory item to check.
20  long        Page to go to if inventory item is found.
24  string(16)  Name of the actor speaking (this is shown on the top left of  
                the page).
40  string(8)   Lump name of the voice file to play.
48  string(8)   Lump name of the background image.
56  string(320) Text to display.
376 ...         Choices.  There are always 5 of them (308 bytes of 0x00 if 
                choice is not present.

A choice is defined as the following:

0   long        Converstaion ID of the item to give if the choice is selected.
4   long        Conversation ID of the item that is required for this choice.
8   long        Conversation ID of the item that is required for this choice, if 
                if the previous was 0 and this has a value then this is used.  The 
                The difference is the cost will be displayed if this is used.
12  long        Conversation ID of an alternate item that can be used to pay 
                for this option.  IIRC this is also not used by Strife.
16  long        Amount of the first item needed to pick this choice.
20  long        Amount of the second item needed to pick this choice.  I don't 
                think this can be combined with the previous field so set one 
                of them to 0.
24  long        Amount of the third item needed to pick this choice. 
28  string(32)  Text of the choice.
60  string(80)  Short message to print to the screen on success.
140 signed long Page to go to when this choice is selected.  If this is greater 
                than 0 then the page specified in not shown until the dialog is 
                initiated again.
144 long        LOG<number> lump to put to the communicator on success.
228 string(80)  Short message to print to the screen on failure.