24882 blogsystem modifications

i am currently creating a blogging website using blogsystem from netartmedia. i am looking for someone to edit the program and add some features/functions i want that did not come with the software. please read up about the software on their website if you are not familiar. i have already installed the program and it is up and running. below are the features i would like to have added/changed. -assign features specific to each package that is available for the bloggers. currently every package is allowed the same features except for storage space and bandwidth. i would like to restrict the features for the free packages offered and offer more for the paid packages. example: free users are not allowed to edit the html layout of their template, however, paying users can. -disable javascript code from being posted in user templates, posts, or responses on the website by the users. however, i need to be able to display javascript codes myself (in the template) in order to display google and yahoo ads. i do not want the user to be able to display the same type of ads/scripts. -incorporate a rating system for the blogs. allow users to rate each others blogs. be able to take this rating and display it on the home page. depending on cost, i may look to add additional features. i don't think this is alot of work. probably just sorting through the code and modifying/adding to it to create the functionality i am looking for. so i would anticipate a relatively quick turnaround time.