32 and 64 bit processes on 64bit 2003 R2 also running Exch..

Hello,

I have a rather annoying problem that I cant seem to work out properly. It
appears the setup I am trying to build is a bit peculiar, although I dont
think SO rare no one would know what to do. So here goes...

I am running Win 2003 R2 Standard Edition 64bit wit Exchange 2007 on it. I
also want to use the machine as a webserver (lightly) mostly to run a small
website on, as well as some demos. Some of these demos use 32bit ActiveX
components like ABC PDF and jMail (although ideally I would use CDO, but it
appears Exchange makes this impossible)

Now - I know how to switch between 32 bit and 64 bit ASP, and this works OK
except........

The moment I switch to 32 bit, the domain becomes unavailable. The main
domain is completely lost, and any subdomain (sub.domain.com, running as a
seperate website in IIS) only works from other machines and not on the
server itself (again, I just get Page Not Found)

I have fully completed all steps outlined here:
http://support.microsoft.com/?id=894435 and only switching back to 64bit
makes the domains available again (although sub.domain.com still can not be
seen on a browser on the server itself, but that I can live with - not ideal
but possible)

Now - my GUESS here is that since Exchange is fully 64bit and has various
www-based stuff running under "Default Website", switching to 32bit makes
all that go bananas and thus something stops working. From what I read, you
can not run 32bit and 64bit together, and so I am pondering this:

1) If I make a SECOND application pool, and put every site except Default
Website under it, would that fix it? Can one application pool be 64bit,
other 32bit? If I look at the possible settings, I am thinking NO but
perhaps I overlooked something
2) For the fun of it, I have enabled "Outlook Anywhere" in Exchange 2007 -
if I disable it, do you reckon it will "free" the "default website" and thus
make 32bit cool to be used?
3) Am I completely bonkers and is it actually the color of the server case
that causes it?!

Any advise very welcome. At this stage, unless there is a solution possible,
I am thinking of running Virtual Server instead and run all web-stuff on a
32-bit Virtual machine. This would have some benefits but the machine is not
ideal for that setup (Dual Xeon 3.2/1M with 8GB). I have a Dual Quadcore
sitting idle too but would prefer to run it under Server 2008 when it comes
out.

Many thanks

WD