Click
Support Ticket either here or in Kraada's post and pick a section (it doesn't really matter which, but 'Submit Hand Histories' would be fine here).
Describe the problem you have in the main Message field.
Click "Browse" below that and select the file you want to attach, then click "Attach".
Wait for it to upload and refresh the page - it should show the filename below in green as an attachment.
Then click "Submit".