Using Texporter in Max 4.2

Could someone possibly explain to me how to use Texporter in Max 4.2? For one thing, how do I create a map that contains every object on the model? Try as I might I can only select one mesh at a time, which is pretty useless.

Thanks for any help.

Just thought I'd clarify and bump, I need to know this badly.

I'm running 3DS Max 4.2 (a legitimate copy) and using Texporter v3.4. Before I start working on a model, I'd like to know that I've got all the necessary skills. I can animate and I can model (to a certain degree), but giving my model a texture is more difficult than I thought.

When using Texporter, It works like a dream for single meshes, so origionally I thought that I could only use one mesh on each map. But Blizzard models contain several meshes that point to the same texture, so that can't be right.

What I need to know are as follows:

1. How to weld meshes together. I've tried searching the forums and reading 3DS Max's help to no avail.
2. How to have several meshes on the same map. Right now, Texporter only lets me select one object at a time, but I must be doing something wrong, because other models have more than one mesh on the same map.

If anyone can help me, I'd greatly appreciate it, as I really need this info to do modelling.

Also, sorry for bumping, but like I said, I really need to know, and I thought this might need more clarification.

Thanks, 35263526