Dreamweaver is pretty well known and quite nice if you have the spendy for the big-name commercial apps. Although at times it can be a bit messy using the built in scripting. (Might have to go to split or code view to see what it's actually putting in.) At least it's not as bad (or awful... cough cough FrontPage cough MS Word cough) as some older WYSIWYG type webpage editors.

But if you actually know the HTML, CSS, JavaScript side of things, Notepad++ is also a decent text editor with useful line numbers and neat syntax highlighting. The program itself is free, and those features make the process of debugging a little easier.

And then there's FileZilla if you do a lot of FTP stuff, but I'm not sure how important that will be. (Depends on how your hosting service handles that, some of them use a web interface. But FTP is handy if your queueing (sp?) up a lot of stuff to send over.)

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Barbequed Pixels?

Your friendly neighborhood Wings3D nut.
Also feel free to browse my freebies at ShareCG.
There might be something worth downloading.