Advice on Changing from .htm to .aspx

And keeping existing page rank

[Aberdeen]

I have a stale old site that has been plodding along for 3 years now, pulling in 100 visitors a week and basically breaking even. I have done a great redesign (I think so anyway) and now want to convert the whole site to .aspx .

Does anyone have a simple step by step guide.

All the file names have changed, to bring them into line with our other sites.

I have done all the testing and it works fine, and it's on the same server. The question is how do I make this a smooth transition and not loose the page rank which it already has.

I presume I will have to use some sort of redirect. But have no idea how to do it.

Any Advice.

Cheers

[Sanenet]

Have you considered changing the IIS page parser to parse .htm files as .aspx? No need to change file extensions ;)