Batch Download Pictures From Website

Hallo All!!
First I have to say, I've been using PicaLoader for a few weeks now, and it is absolutely brilliant!!
On to the question..................
I have a sequence of URLs that look like these:

http://www.notchanging.com/notchanging1 ... ging1.html
http://www.notchanging.com/notchanging2 ... ging2.html
http://www.notchanging.com/notchanging3 ... ging3.html
...
http://www.notchanging.com/notchanging1 ... ng150.html

I don't want to do this:
http://www.notchanging.com/notchanging[1-150]/notchanging[1-150].html
Because from what I understand, that would do:

http://www.notchanging.com/notchanging1 ... ging1.html
http://www.notchanging.com/notchanging2 ... ging1.html
http://www.notchanging.com/notchanging3 ... ging1.html
......
http://www.notchanging.com/notchanging1 ... ging2.html
http://www.notchanging.com/notchanging2 ... ging2.html
http://www.notchanging.com/notchanging3 ... ging2.html
.......
and so on.
Any ideas on how to get around this problem would be greatly appreciated!!
Thanks!