At the risk of saying "Me, too!", well, Me, too!
The indentation guide is, quite simply, the best tool for the job. In CodeWright (it's been 2+ years and I still miss parts of it) I had guides at 2nd, 4th & 6th indentation levels. Made it very easy to find opens & closes of code blocks, midpoints, etc. Very useful, as well, when a coworker (who just refuses to follow any formatting guidelines whatever) does work for me, and I need to reformat.
Yes, I know about beautify, code navigation and the vertical line features. The vertical line I keep at column 80 to help me keep my code wrapped manually, and beautify & navigate don't work so well with VB6. (Java, C++, HTML are great, by the way!) But VB6 is 80% of my day job, so that's where I miss it the most.
Thanks,
Jim.