Premium Geeks can upload images from their PC into their posts easily by doing the following:

When you are creating a post, there is a section below the message box called 'Additional Options'. There you will find a button called 'Manage Attachments'
Clicking that will bring up a window that will bring up the attachment manager window.

There you click on the browse button, then choose a file on your computer.
Once you have chosen the file, click the upload button.
When all files are uploaded, click Close this Window and you will notice that your attachments will appear in the Attach files section of Additional Options.
When you submit your post, those items will be viewable in your post.