Customization of Open Source Meneame CMS

What I need done: ------------------------ 1. I want users to be able post stories without submitting a URL or skip the first page of submit (perhaps a checkbox that says, 'I don't have a URL'), so they can post stories without necessarily submitting a URL. 2. In meneame, users with enough karma can upload images from their local computer in the comments (using the comment form). I want this same functionality to be available when users submit a story. Disqus comments are a perfect example of what I am talking about - Meneame already has the functionality of creating the uploaded images to small thumbnails, which when clicked are enlarged as a ajax pop-up - This is an example of Disqus comment -> [login to view URL] ------ IMPORTANT (applies to the 2nd requirement): Users are able to upload only one picture per comment, I want users to be able to upload multiple images when they submit a comment. The same requirement applies when users submit a story. Again, check the Disqus comments for what I am looking at. ------- 3. When users post a comment/story and users press the Enter key, the text is not converted into paragraphs. I want users to be able to do this. So, if you type: Paragraph 1, Paragraph 2 The output is Paragraph 1, Paragraph 2 I want the output to be: Paragraph 1, Paragraph 2 Others: - I do not need changes in the looks or design, I can handle that. - I have other requirements for meneame and if this project is awarded to you, be assured of future projects related to meneame. - Meneame Version you will be working at: Version 4. Specific expertise that I am seeking: - You should have knowledge of how sites like reddit, digg or meneame work. Spanish speaking programmers (who can understand English) would be preferred. Time frame for delivery: At the soonest.