Aliasalpha: Is there any sort of tool that can be used for this stuff? Something along the lines of NWN's where you can lay out the script and associated commands in a simple interface?
I can certainly code a HTA app that will run the conversations but thats the sort of thing that can't just be imported directly
[url=http://www.idi.ntnu.no/~joh/ni/download.html]Near Infinity[/url] can edit most of the data present in IE games, including references to - but not the actual - graphics, sprites, and sounds (mos, bmp, bam, wav, acm).
Infinity Explorer can display and export, but not edit, about the same data.
WinBiff can extract and add datafiles from/to the archive files (bif)
Infinity Dialog Workshop should be able to edit dialogues, but it doesn't work for me
DLTCEP (Dragonlance Total Conversion Editor Pro) can do a lot of things, including creating tilesets (all area backgrounds are built up of a number of 64x64px squares, not a single large image) and editing various aspects of areas (graphically defining where containers, doors, walls, traps, etc. are placed)
IE Tileset Map Editor pretty clearly says what it should do, I prefer using DLTCEP though
MOS Workshop, though old and very similar to MS Paint, is useful for the fact that it can convert from normal graphics formats to MOS and BAM and back - the installer doesn't work on my 64-bit Win7 though, so I used a virtual machine with XP and then copied the binaries and dll's back from the VM.
...yeah, that's the tools I've tried to use, I recommend DLTCEP for editing area data, MOS Workshop for converting graphics, and Near Infinity for just about everything else.
There are some photoshop plugins on the same page as MOS workshop, for exporting and importing graphics, but I couldn't get them to work (my photoshop is probably too recent; CS4).