Simple tool to generate sequentially numbered string in HTML?

Dear All,

I am hoping to learn if there is an existing tool or method for achieving my simple requirement as outline below.

I need to post the links in a single post on my forums to a very large number of images (over 1000 to be precise). Each are numbered sequentially and all I really need to do is to show them in a basic 3 unit wide layout as follows:

[img src="http://myURL.com/image0001.jpg][img src="http://myURL.com/image0002.jpg][img src="http://myURL.com/image0003.jpg]

.. and so on to image1000.jpg etc.

My difficulty is that I need to do this over a thousand times (and that's just for one image collection). I really don't fancy having to do it all by hand.

Does anyone know a way of generating the above in say a 3rd party program or in a text editor?

Thanks in advance.