Opera – changing the default dictionary lookup

I've just installed Opera 10.53, and love some of the new features. However, I use the right-click menu to look up word definitions fairly often — and I prefer Answers.com to the default Merriam-Webster.com. I tried the method I've used in the past, but the switch wasn't made.

I'd tried the tip at Tamil's How to change hotclick dictionary/encyclopedia site in Opera? at my.opera.com … but let me put this in sequence, because the last line in the first section below is what caused it not to work:

(1) Make a duplicate of the toolbar:
- Tools > Preferences > Advanced > Toolbars > Menu Setup
- Select Opera Standard toolbar and click Duplicate
- Select the new toolbar (your copy), then click Save

(2) With Opera closed, edit the new toolbar file (this is Tamil's tip):
- Go to C:\Documents and Settings\YOUR USERNAME\Application Data\Opera\Opera\menu\
- Open standard_menu (1).ini (open in a plain text editor, not a word processor).

- Around line 1011, change:
Item, MI_IDM_SELDICTIONARY=Hotclick search, 50
to:
Item, MI_IDM_SELDICTIONARY=Go to page, "http://answers.com/%t"

- Save

That should do it. Thanks to Tamil for this tip.

For Opera 11 (and some earlier versions):
- Around line 1060, change:
Item, MI_IDM_SELDICTIONARY=Hotclick search, 50
to:
Item, MI_IDM_SELDICTIONARY=Go to page, "http://answers.com/%t"

Or, of course, the dictionary of your choice.