Hi,
>>It's a (according to MS bad) convention that I acquired - using underscore as a suffix to denote 'internal' identifiers.....

>So what is the good way?
The Microsoft way <g>. From http://msdn2.microsoft.com/en-us/library/ms229045.aspx:
"Do not use underscores, hyphens, or any other nonalphanumeric characters."

> I usually use "m_" prefix but have also seen just "m" without underscore.
I see a lot of code using just the underscore prefix (and generally using Camel casing). Again, it looks as if MS only want us to use Camel casing for parameters and Pascal casing for pretty much everything else.

Regards.
Viv