For Windows Vista
For Windows XP Home Edition
For Windows XP Professional Edition
For Windows 2000
(3) Set the paper thickness lever properly according to the media .
Paper other than envelopes-> Left side
Envelopes/T-Shirt Transfers -> Right side
(Also, if none of that remedies things, take the paper out again, look down at that roller that grabs and feeds the paper: is it rough on the surface? or is it tightly against its seat at both ends? if space shows through at one end, that would explain the misfeed.)