Many people have.

First thing you should do is make sure its up to date with the last patch. That was version 1.0.15

Joomla 1.0 series is no longer supported but if the site is doing all you want it to then there is no need to change it.

Many people do want a proper upgrade path though and so converting from joomla 1.0 to 1.5 is possible, but not something that comes easily. How you go about it depends on the build of your site and everyone is different.

If you wish to have a go and bring your results to the group or just talk it over please do come along and we can give you some tips and pointers.

If you want more detailed help that is unfortunately beyond the scope of a meeting but there are several developers who come to the Joomla London User Group who would be happy to help you on a commercial basis.

If you wish to be put in contact with someone who can do the work then please do contact us on this link .