Here's an application suite that allows you to have shortcuts to websites on your BlackBerry homescreen/ribbon. Where the shortcuts show up depends on the theme you are using. Either the applications folder or the home screen.
Configure the shortcuts using the master hub application, enter the address of the website you want the shortcut to launch (include http:// ) - you can also customize the icon of the shortcut by entering the web address of a suitable .png image file but this is optional. The icon for any shortcut will update after the first time you use it.
Here for both OTA and desktop installation and more info.
Blackberry Web Shortcuts