InetGet mass image downloader

First of all I want to say that I don't understand autoit at all! In that sense, I couldn't even be regarded as a beginner. So I hope you can make things in this topic understandable even for someone like me. Thank you

So the thing is I looked around google for a simple little script to mass download galleries of images and what I found was InetGet. Even I could understand that simple command.

Now I've got this:

InetGet("http://xyz.com/xyz.php?id=1&imgname=001.jpg","C:\001.jpeg")
InetGet("http://xyz.com/xyz.php?id=1&imgname=002.jpg","C:\002.jpeg")
InetGet("http://xyz.com/xyz.php?id=1&imgname=003.jpg","C:\003.jpeg")

And that goes on for another ~150 lines. It all works fine however there's one annoying thing:

When I want to download another "gallery" of images I'd have to change the "id=1" to, let's say "id=2" or "id=3" ...
Sounds simple but it's really a pain in the ass to do it for almost 200 lines ^^

So.. I think you understand with that. I'd thought of some way to automatically or easily replace the "1" with another number. But of course, if you know of some completely different way to mass download images like this that I could use, feel free to tell me about it!

.. I really wrote quite a lot about such a "simple" problem, didn't I?

I really really hope someone can help me on this.
Thank you for reading!