Please check it again here….
1. Select Lotus Notes > Preferences
2.Click “Web browser”.
3. Do one of the following steps:
a) To use the embedded browser, select “Use the browser embedded in this client.”
b) To use the browser that you have already set as the default for your computer, select 4. Use the browser I have set as the default.”
5. Click OK.
CAUTION: Ur selection determines the browser that displays for all locations (ie. Location documents) in Notes. The embedded browser lets u open and navigate Web pages directly from within Lotus Notes.
Hope it may help u !