importing bookmarks to firefox

hello, ive created a new screename on my PC and i was wondering where the file is for my previous screenames firefox's bookmarks so i can import them to this screename

thanks in advance

You can carry over the entire profile. Just copy

C:\Documents and Settings\Application Data\Mozilla\Firefox\Profiles[alphanumeric].default

>>2
Opera uses almost the same profiling system as Firefox. It's not any better.