Corrupt .htaccess file

My site was running well last summer. But today when I tried to make updates in the wp-admin section, I got lots of 403 errors on all PHP files: load-styles, load-scripts, edit.php, media-new.php, etc… The interesting thing is that the front-end of my site has no problems.

Upload images to remote server

I am using WordPress media uploader to upload images and I was wondering if there is a way to make it upload to my remote server instead of my local server? Example: My wordpress blog is hosted on Server A and I want to want to use the media uploader to upload images to Server B instead of Server A.