BleepingComputer.com: not getting the hang of these google extensions

I started to fiddle around with chrome and got interested in the extension feature, but found out that you can only use em if you're using the Dev channel of chrome. I ended up doing that and now i'm having a difficulty following this tutorial.

http://code.google.com/chrome/extensions/getstarted.html

I can't get the icon to appear on the extension and when i try to edit the JSON file to add the "popup.html" line to it, it gives me this error(the file isn't a proper JSON )

Does anyone know where i can get help with this??

Did you save the file as manifest.json and not manifest.json.txt?

Yeah. I changed the extension type using the command prompt. I think that it's giving me that error because i'm not filling it in right. This is what I put:

{
"name": "My First Extension",
"version": "1.0",
"description": "The first extension that I made.",
"browser_action": {
"default_icon": "icon.png"
},
"permissions": [
"http://api.flickr.com/"
]
} ...
"browser_action": {
"default_icon": "icon.png",
"popup": "popup.html"
},
...

(p.s. i'm still fairly new to all of this so yeah.....)

wait, nevermind. i got it. I WAS posting it wrong. This is how it was supposed to look:

{
"name": "My First Extension",
"version": "1.0",
"description": "The first extension that I made.",
"browser_action": {
"default_icon": "icon.png",
"popup": "popup.html"
},
"permissions": [
"http://api.flickr.com/"
]
}