ok. Just connect your iphone to your computer. Open up iTunes. Select your iPhone. Then click on "info". If you're using iTunes 10.1 than scroll down till you see the box labeled other. You should see a "sync bookmarks with" checkbox. It it is not already selected than go ahead and select it, then move over to the scroll bar to the right and select the browser you want to sync your bookmarks with.
Then sync your iphone. When you've finished syncing you should now have all of your iPhones bookmarks available in your chosen browser.