Welcome to the forums.
For future reference, could you please title your thread to something relevant to your issue, such as "Can't transfer ringtones, photos, etc."
What software did you install? You need Desktop Manager. If you have a media card, you don't need Roxio Media Manager. If you do no, you will need to download Desktop Manager with Roxio Media Media Manager. BlackBerry Desktop Manager Downloads - BlackBerryFAQ