Welcome To the FAQ
Now I have no idea what questions people are going to ask so I will update the site as they come in.
I will however explain how I see people should be uploading the files.
BASIC TEMPLATE

Wow look at
the cool new junction. I wish i could share it with everyone. I think i should
upload it to openttdexchange.

So I use my
Copy & Paste Patch toolbar so copy what I want. (keep in mind it wont copy
stations)

Now I select
Save from the Copy & Patch toolbar to save what I just copied. (will save to
c:\program files\openttd{version}\save\)

Now before I
minimise openttd and upload this kickass piece of track I need to make a
screenshot. So I make sure the piece of track I just copied is in the middle of
my screen and I am at maximum {standard} zoom-in. I let openttd take a
screenshot for me by going to the information icon and clicking screenshot.
(will save to c:\program files\openttd{version}\)
Now is a good
time to go an grab your favourite Zip/Rar compression program and zip up the
template (good habit as some templates need several bits e.g station
start/finish).
Now login to
the website and choose upload. Give it a good subject and a decent description.
Find where your zip/rar file containing the template is and select it. Then find
the screenshot openttd made and select that. And hopefully the file should be
uploaded and everyone can start using your wicked template.
This page is not to be held responsible for any uploaded files. It is each user's responsibility to check the legality of files they upload.
Site & Graphics Copyright 2008 Marc Lane aka eraser.