Aaron Stebner has a blog post and an update on installing the C++ redistributables (msvcr80.dll, atl80.dll and the rest.) You can choose

• the user doesn't need to do anything, but there's a progress dialog and it has a cancel button
• the user doens't need to do anything, there's a cancel dialog, but no cancel button
• there's no ui at all and nobody knows what's happening

Turns out the command line you use varies a tiny bit for redistributable packages you installed with Visual Studio or those you get from the web, so read both posts.

Kate