Convert xml to html

I'm probably way out of place here; but I figure some of the more experienced users would know what I'm looking at.
I have: a compressed XML file (bzip).
I want: to dump it to multiple html files (or anything that is fully marked up, eg docx, rft etc)

Can someone point me to a program that can do this? Either a single app, or a series of apps, that I can download (free or paid) and run this file through and just be done with this?
I've tried Apache but I can't get my head around this; not really my goto. I can't get the a file into b, c, d, e, I just keep getting file a.xml turned into file b.html and that's not right. I should get many hundreds of individual pages dumped from this.

Any thoughts or guidance please.

Thanks. Found two in the first few pages that weren't in the Google results. I'll give them a try too