Now that plain old Visual C++ 2005 installs pretty well, I've been trying to get Visual C++ 2005 sp1 and Visual C++ 2008 to install. The latter requires .net 3.5. And all of them appear to be blocked by "err:msi:ACTION_InstallFiles compressed file wasn't extracted", http://bugs.winehq.org/show_bug.cgi?id=20110 Grrr.
On the bright side, with Jaun's fix today, .net 3.0's runtime installer seems to kinda work.