Drupal login/post reader comment form embedded in different CMS using javascript

We are in transition of moving our news content to Drupal. In the meantime, we'd like to move our reader comments on news stories into Drupal. "Reader Comment" is a content type in our Drupal platform. What I'd like to do is embed a reader comment submission form in the html of the news article that is based on .NET using Javascript include. If the user is logged in to Drupal, then the form will be available for data submission into Drupal, if not, then the user is asked to log in and upon login, can post the reader comment.

In addition, I'd like to call in the reader comments from the Drupal based site (using some sort of view I would guess) into the .NET based article. I plan on using the prepopulate module to associate the article ID of the news article with an "articleid" field in the Drupal "reader comment" content type.

Any feedback on if this is possible and what it would roughly cost to implement, please provide feedback.

Thanks.