G-TXD is texture editing component of G-Tools. Fully supporting all three Grand Theft Auto games it allows you to created, edit and maintain texture archives. It like G-IMG is a true multi file environment allowing you to work between several files seamlessly. Advanced users can take advantage of full MipMap support as well as a wide variety of other tools. For a full list of features and tools please see below.

http://www.turnipfan.com/post_pics/gtxd_screen_000_m.gif

Features / Functions / Tools
- Multiple File Environment
- Full multilingual Support
- Add, Extract, Delete, Replace
- Quick Extract
- Extract All
- Copy Between Open Files
- Templates Library
- Edit The Texture / Alpha with your favorite image editor
- Invert Texture / Alpha Image
- Add Alpha Channel
- Replace Texture with another (Option to use original Alpha)
- MipMap support (Reading, Writing, Generation and Viewing)
- Texture Wrap support
- 3 Step TXD (See below for info)
- TXD Builder List support (See below for info)
- DFF Checker
- Compress All Textures (Auto compresses all textures in archive)
- Archive Converter (Convert file(s) / folders of files between game versions)
- Archive Merge (Join several archives together in a single file)

3 Step TXD 
This tool allows you to create a texture archive in three easy steps.
Step 1. Select the DFF model files that will use this texture archive
Step 2. Select a folder that contains the images or select a TXD Builder List
Step 3. Select your output file
Just like that you have yourself a texture archive.

TXD Builder List 
Steve M wrote a Max Script that allows you to export a list of the textures currently in use by that 3D Scene, with his permission this Max Script is included with the G-TXD package along with an updated version of the script for use with Max versions 6, 7, 8 & 9.
G-TXD allows you to use the exported list to add / build textures.

Update 0.1.1 (12th Jan 2007)
- Added ability to apply properties to multiple adding textures
- Added some focus events to make editing properties faster
- G-TXD now keeps the width, size and location of the window from last use	
- Added some extra context menu items to save time and mouse wear and tear
- Added functions to flip textures vertically and horizontally
- Added mouse dragging of texture in preview area (right click to drag, left to reset, its more fun than feature)
- Added mouse wheel support for switching between tabs

Alternate Download: Here

If you have trouble running the tool, make sure you have the..
.Net Framework 2.0 installed (Free to download here)
DirectX 9 + Managed DirectX Runtimes (Free from my own site)