Interspire Cart multilanguage & payment gateway

Hi, we would like to have a custom implementation to INTERSPIRE CART system ([login to view URL]) in every version: STANDARD, PROFESSIONAL and ULTIMATE. We take care of licence and hosting the script on our server. We'll give you a dedicated ftp and db access. We need two task completed in PHP (the script is 100% open). You can also access their developer's docs at [login to view URL] or we can send them to you. - Add multilanguage feature. The script already allows the admin to translate the entire system in another language. We need to add up to 10 languages for everything: texts, descriptions, titles, payments, static pages... Users should be able to select their own language (flags or dropdown menu) in every page. We also need changes in the backend so that, at every input we can insert the translation for that item on one single page. Example: adding a product should show among standard fields, one filed for each active language where requested (title, description, options, shipping....). An ajax, tabbed or uncluttered interface is a must. Things should look professional and easy to use. - We want to add E-Junkie as payment gateway in particular for downloadable products, complete with download and serials management. - EXTRA: we'll award extra $100 to developer that can add the following features to downloadable products (already present in the script): *** serials management (we add a list of serials needed activate each products, when someone buy a software the system will pick one, send it to the customer and store a record in the db with user's info). *** serial retrivial (for the customer who wants to recover the lost serial number). Apply ONLY if you already know this script, we have a very short time (3 weeks) to complete. Payment: 50% on escrow as we award the project. 50% on completition. Support: 6 months of full support on your custom changes if there are bugs AND when Interspire will publish new versions, in other words you're in charge to apply the latest version of shopping cart, keeping the features we're asking here. We also request a complet changelog when new versions are applied. Updates: after 6 months we'll give you $30 every time Interspire post a new version for you to upgrade. Only serious bidders. We reserve to not award this project. Max budget $600, do not bid over this. If you run out of the requested timeframe we reserve to extend the support time or ask a discount or cancel the project. Have a nice day.