Well, it's impossible for there to be more than one index page, so trying to install 2 scripts in the same directory in iteself is hard. You can just put scripts in folders and use includes or links to access them.
Well, SSH is available on paid accounts from what iv heard, you'll have to ask an administrator. And i'm not compltetly sure about youer main problem, what are you trying to do and what are the results you are getting?
I've used cPanel to access fantastico and from there to install soholaunch pro edition. It's a pretty complex idiot proof and quick sitebuilder, which from their website looks pretty comprehensive. I've posted on their forums but I'd already tried everything they suggested. I have a paid account here so I'll see what the possibilities are.
Thanks again, and if you find something popping into your head that might be relevant I'd appreciate it.
The secret was to avoid fantastico and use the site software option on cPanel instead. Got it going, tried soholaunch and then decided to dump it. Another day, another dollar.