231810 Joomla add function and modify

I have a new joomla 1.5.3 to let all user to share their funny issue. And hosting on [login to view URL] This is [login to view URL] and I want to do some modifications and add some functions. Add functions: I want to enable Search Engine Friendly URLs, but after enabled it, my frontend can't show, please fix it. I want all registered user able to publish their article or video, they have to choose article type or video type during their submit. For Article: not allow upload photo, but allow link external photo link. If there is any link, please add nofollow tag. For Video: only allow link external video link (link youtube) and use my default size. User only allow write title and video link. No content text. Popular: There are 5 Count, I want to change it to 3 count and only show article category, not video. For each count, show title + three rows content. Change the width of this box using 3/4 screen. Latest News: There are 5 Count, I want to change it to 12 count and only show article category, not video. For each count, show title only. Change the width of this box using 1/4 screen. There are 5 articles showing at below Popular and Latest News boxes: Please keep the first one and no need to show the 2-5 articles. And the space of 2-5 articles replaced by showing 6 video which define by admin. Left hand side show 3 video and right hand side show 3 video For each Video: Video screen thumbnail around 130 x 97 have to show on the left, video title show on the right. After click either thumbnail or title, it will go to the particular video page. For the article or video page, left hand side showing 5 video thumbnail with link. At the bottom of the content, show another three articles title and link. I installed JoomlaComment 3.25 and it working properly. Please remove "Powered by !JoomlaComment 3.25" word on the frontpage at leave comment page. Please remove below text on my website: Copyright © 2008 hkomouth.com. All Rights Reserved. Joomla! is Free Software released under the GNU/GPL License. At this space, please place the link of About us Terms of services Privacy Policy and then create 3 blank page(it mean keep header and footer, just blank the content) for them to let me add content. Please remove Powered by Joomla!. valid XHTML and CSS. Please make a new Module / Menu so that I can edit this footer link and text by myself anytime. Serious Programmer ONLY. I will pay 10% escrow to start this project. After well test the project, this 10% escrow payment will release and remain 90% payment will be send and release immediately. Bidder bid this project will be agree this payment arrangement.