[ZendTo] Questions about a Centos 5.6/7 installation

[Steve Campbell]

I've just finished getting a working Centos installation of ZendTo on a 
Centos Xen VM for testing purposes. I've got a few questions that I 
couldn't find the answers for in the archives.

Firstly, I found a thread on the apc settings that are to go into either 
php.ini or apc.ini which indicated someone else didn't have those 
settings and didn't know where to put them. I, too, didn't have those 
settings and was wondering about them. The thread ended without an 
answer from Jule's last question to the OP. Seems to work without them 
though.

Running Centos with the Xen kernel, is there a way to install the 
downloadable vm without having to have VMWare installed anywhere?

I went through the complete rpm install on my test box, and the PHP mods 
were a strain, to say the least. The instructions seem to be all there, 
but it's just a long and drawn out process to modify PHP so that users 
can upload very large files. It's a little confusing at first to have to 
remove php, install php52, and them modify it, but I guess I understand 
why all of it's done. If I don't intend to allow files larger than 2GB, 
can I skip the modification to php52 and run with the config settings 
set to something less than 2GB without any problems?

Seems that Centos 5 has PHP 5.3 available from their default repos. I'm 
not sure if all the required packages are there, but if they are, can I 
replace the default PHP 5.1 with the Centos 5 PHP 5.3 packages if I 
still want to keep the <2GB limits? I typically use rpmforge, so the 
Clam packages would be available, but not sure about some of the others.

I work for a company that has a couple of dozen sales staff that sends 
out very large proofs of advertisements by email. These emails really 
clog up my mail server since I need to set my MailScanner size limits to 
a large number, and my servers aren't the newest in the world. ZendTo 
appears to be a great tool to get around this if the sales staff and 
customers would use it. Thanks, Julian, for offering this.

Lastly, MyZendTo seems to be a little confusing to me. How does it 
differ from the default ZendTo? Does it require another instance of 
apache, an apache virtualhost of it's own, and what are the advantages 
to our local users that they wouldn't have it made to use ZendTo?

Windy, I know, but it's my first post and maybe with good replies, I 
won't need to bother you all much later.

Thanks
steve campbell