I don't want to hijack this thread, but due to the high number of dimension styles in the Microvellum.dwt, dialing in your preferred dimension variables can be quite time consuming.
There is a pretty nifty tip I'd like to share that can really speed up MV dimension style modifications, especially if you have a lot to change.
As long as you installed the AutoCAD Express tools, you can export and import dimension styles (dimex and dimim). The resulting files are in ASCII format, so you can use find and replace (Ctrl+H) in Notepad for sweeping changes. To make sure you are staring out with the unmodified MV dimension styles you should have MicrovellumImperial.dim, MicrovellumMetric.dim and MicrovellumMetricImperial.dim in the root of your Microvellum program folder. (Or download them below)
It's a good idea to back-up your company.dwt prior to using this method. It can be a little tricky, for example, if you wanted to change the VERIFY to F.V. in your dim styles you would want to enter DIMPOST VERIFY with DIMPOST FV when using find and replace, because using Ctrl+H with VERIFY and FV would screw things up as there are other instances of VERIFY. Using the -DIMSTYLE; STATUS command will help determine the definitions for the ordain amount of dimension variables AutoCAD uses. Once you are finished with you modifications, purge all your dimstyle in you MV.dwt except STANDARD and use dimim. Once you satisfied with the results using dimex to create a back-up.dim is a good idea.
Stock-MicrovellumImperial.dim_DOWNLOAD
Stock-MicrovellumMetric.dim_DOWNLOAD
Stock-MicrovellumMetricImperial.dim_DOWNLOAD
Hope this helps,