Really limited CMS

Hi folks,

I've designed an ASP.net web app for a client and everything works great. My background is in application development mainly and I'm no graphic designer, but functionality and a simple clean presentation was all that was required. The layouts are done with tables because the last time I did any web stuff that was the way it was done and I didn't realise at the time quite how much could be done with CSS. I have used CSS for styles. I may come back to this project and convert it to CSS at some stage but not right now.

All the work was done in Visual Studio 2005 and I did all of the page editing and layouts by hand rather than through the wysiwyg editor.

Now, the clients need to be able to update occasional bits of text on the site but they are very non-techy. I need to find them a wysiwyg editor that is unlikely to interfere with any of my formatting.

I'm doing my own research too but this isn't my main area so it's time consuming trying out different tools so I'm hoping someone has prior experience and could point me in the right direction? Solutions don't have to be free.

If all else fails I'll write a tool to do the job but that seems like overkill right now.

Thanks!
Brian