i dont think iam i got the free membership i got the script but its on my hard drive and i dont know how to post it being as theirs no option to open your hard drive.
You can upgrade here: http://www.indietalk.com/subscriptions.php?
Then in your post click "Manage Attachments", and browse your hard drive. Click the file you want to attach.
To pay: when you become an indietalk premier member (you pay a small fee) then the indietalk server can host a certain amount of web space for you. Or you can just pay for a full blown web site from a host provider and put your files on their servers.
For free: if you have some kind of 'always on' internet access (i.e. ADSL, Cable) then you can set up your computer to host files for free or rather for the price you already pay for Internet access.
If you pay for it, it's easy because all you need to do is upload the files. Sort of the give a man a fish.
If you want the free route, then there's a learning curve. But once you learn what you need, it's free. This would be teach a man to fish.