IE protected mode in Vista

Hi all,

As you probably know, IE works in Windows Vista in so-called
"protected mode". In this mode IE has very limited set of locations on
the filesystem for writing. For example, IE cannot write to
%USERPROFILE%\AppData\MyProg\MyProg.ini and to
%USERPROFILE%\AppData\MyProg\MyProg.log, where MyProg is my program
working as IE extension (BHO). After surfing through the Internet, I
found the following solutions, neither of which I really like:

Solutuion 1. Make a separate executable and delegate all functionality
of my IE extension to it. The IE extension will then become a proxy
for this executable, talking to it through IPC (e.g. as described
http://www.codeproject.com/KB/vista-...ivalGuide.aspx)

Solution 2. Turn off IE protected mode during installing MyProg. Of
course, with the user's approval. The problem here is that I cannot
find a (Vista-only) WinAPI call to switch off IE protected mode. Or
Registry key at least...

To sum-up: the first solution seems to me too cumbersome. The second
seems too global.
All your advices are appreciated. Is there an alternative solution?

Vitaly