Can anyone suggest any guidence for this?
After creating a loopback install (700MB allocated), logging in as root and enabling apt I've changed the config to the test server and done apt-get update.
I then went ahead with
apt-get apache php4 mysql-server mysql-client php4-mysql
All going well that should install everything I need to turn my xbox into a nice php dev tool however after progressing soundly through the install it errors out complaining that Sub-process /usr/bin/returned an error code(1)
I have a feeling that at some point some dependency has been unfullfilled but I was under the impression that this is what apt-get was supposed to avoid :-|
Any assistence is gratefully received

I just tried this myself and ran into problems. It looks like the problem is with setting up exim4-config, which in turn means the other apps cannot be resolved due to dependency problems. The errors I got were
Setting up exim4-config (4.50-4) ...
find: invalid argument `mail' to `-user'
find: invalid argument `mail' to `-group'
2005-05-21 06:08:55 Exim configuration error in line 79 of /var/lib/exim4/config
.autogenerated.tmp:
user uucp was not found
2005-05-21 06:08:55 Exim configuration error in line 79 of /var/lib/exim4/config
.autogenerated.tmp:
user uucp was not found
2005-05-21 06:08:55 Exim configuration error in line 79 of /var/lib/exim4/config
.autogenerated.tmp:
user uucp was not found
exim: could not open panic log - aborting: see message(s) above
Invalid new configfile /var/lib/exim4/config.autogenerated.tmp
not installing /var/lib/exim4/config.autogenerated.tmp to
/var/lib/exim4/config.autogenerated
dpkg: error processing exim4-config (--configure):
subprocess post-installation script returned error exit status 1
Seeing as it looked like the necessary mail users weren't in place I ran update-passwd as root and then ran apt-get again.
This allowed exim4 to be setup but it still failed on seting up apache (although annoyingly it doesn't give much error infomation). I tried apache2 instead and that seemed to work fine. i.e.
Hope this helps.