Okay, so first thing I found here was this: http://wordpress.org/support/topic/74140 however it's Greek to me, and I think I need further support here.
The site is currently being developed at http://www.nectardesign.com/wptemp - this is my client's site, and is hosted with a company I'm completely unfamiliar with, on a Windows server (and I'm completely unfamiliar with that as well, as for the past year, every wordpress install I've done has been on a Linux server, but I can't arbitrarily make the switch, because they have a current site up at the root, and I don't want to do anything that will mess that site up while we build the new site in the backend here...)
Anyway, when uploading images via admin using Firefox, the image will upload, but I get a fatal error saying it can't do it. Then I refresh the browser, and the image is there, but I get a strikethrough on the thumbnail option. So I insert the pic anyway, and it looks fine (full size) after saving and viewing in FF - however, in IE, the image IS a thumbnail. When uploading using IE (as my client does), it shows as a thumbnail no matter what browser you view it in.
Are you still with me here? I'm getting lost in this myself I think.
The reply on the other post about this issue was:
"You don't have the graphics library extension enabled in your Web server.
Not sure if the settings are the same for IIS, but for Apache, I had to uncomment out the following line in my php.ini file:
Once that was uncommented and I restarted my Web server..."
Okay, so I don't know if this is IIS or Apache.
I don't know how to access the php.ini file.
And I don't know how to "restart my web server".
Ugh - I've been using wordpress for over a year now, and this is the first time I've ever been forced to use it on a Windows server. Can anyone help me?