Your description does not say anything about how images are deployed from MB to WSS.Are you importing images from MB to a TS Workarea before deployment?
MB is more of a media repository than a filesystem for your website - atleast that's how its been designed. The best practise is to keep raw images - psd and other native formats in MB and syndicate them by converting on the fly to web-compatible size and format. You don't want to link your html pages to a 500MB company logo in psd format, do you?
We are having large number of images n we are storing them in MediaBin.Any how i want to build the http url so the portal can use that.