I think Microsoft should come up with a better view source editor than notepad.exe. If you’ve been using Firefox or Safari to view source, you will not want to use IE 7. I hope IE 8 will have a HTML source viewer that can match Firefox and Safari.
Why Would You Want to View Source?
Viewing the source code of Web page is part and parcel of the Web design process. You can also learn how other people’s Web pages achieve certain effects by viewing their source codes.
Changing IE7 View Source Editor
So how do you change the Internet Explorer default source editor to your favorite text editor?
There are 2 ways:
1. The Difficult Way
Go to Thea Burgur Blog at
http://dotnet.org.za/thea/archive/2004/11/25/7933.aspx
You will have to tweak your Windows registry using regedit.

Then search for the following entry:
HKEY_LOCAL_MACHINE
|_ Software
|__ Microsoft
|___ Internet Explorer
|____ View Source Editor
|_____ Editor Name (Default) = C:\WINDOWS\NOTEPAD.EXE
Edit and change the path to your external text editor e.g. C:\Program Files\Notepad2\notepad2.exe
If you are not familiar with using RegEdit, watch the following video.
Video: How to Change IE Source View Editor
2. The Easy Way
Go download a copy for the free View Source Editor. Run the program and enter the path to your favorite text editor.

My favorite text editor is PSPad, a freeware programmer’s editor. However, you may like to try a smaller text editor which loads quickly… I recommend you to use Notepad2.
Notepad2 – A Microsoft Notepad Replacement
Notepad2 is small, light-weight and fast text editor which is more powerful than the default Microsoft notepad.exe.
You can download Notepad2 for free at:
http://www.flos-freeware.ch/notepad2.html

Check out fiddler and notepad++ too…
Thanks for the tip. I have been meaning to change my source editor from UltraEdi (set by my company’s SOE) to notepad (call me a dinosaur if you like) for a while and finally found out how. I might have a look at notepad2 though.
Yes, uff, UltraEdit (as happened even to me) only to take a look at source is overkill,
thanks for the hints.
Thanks for the lead! View Source Editor is great!