[avr-gcc-list] Installing WinAVR 20070122 broke older 3.4.5 install?

[Bob Paddock]

I installed WinAVR 20070122, into the directory G:\WINAVR411, but now
I find that my older 3.4.5 based code will not compile, with the 3.4.5
compiler.  I get the error "can't find CC1", even tho cc1.exe is where
it has been along in my G:\WinAVR345\libexec\gcc\avr\3.4.5 directory.

Path is being setup with a Batch File, that does not involve
G:\WINAVR411 in any way.

setup345.bat:
PATH=G:\WinAVR345\bin;G:\WinAVR345\UTILS\bin;%PATH%

I added G:\WinAVR345\libexec\gcc\avr\3.4.5; to the path, which then found
CC1.exe, again, but then the libraries where not found -lgcc etc.

I uninstalled 20070122 and then things really fell apart, not being able to
find any header files etc, in what should still be a 3.4.5 based project.
With those header files right where they have been all along.

Is something being stored in the registry?  How do you install two  
different
versions of the compiler at the same time?