Hi Mildred, welcome to the T-Shirt Forums!
http://www.t-shirtforums.com/showthread.php?t=5670
http://www.t-shirtforums.com/showthread.php?t=3459
http://www.t-shirtforums.com/showthread.php?t=5872
http://www.t-shirtforums.com/showthread.php?t=6104
http://www.t-shirtforums.com/showthread.php?t=3770

http://www.t-shirtforums.com/forumdisplay.php?f=15
Here are a couple past threads I found that should give you some good leads:
http://www.t-shirtforums.com/showthread.php?t=5670
http://www.t-shirtforums.com/showthread.php?t=3459
http://www.t-shirtforums.com/showthread.php?t=5955
http://www.t-shirtforums.com/showthread.php?t=5872
http://www.t-shirtforums.com/showthread.php?t=6297
http://www.t-shirtforums.com/showthread.php?t=6104
http://www.t-shirtforums.com/showthread.php?t=3770
Reading through some of the past threads in the Heat Press section of the forum should give you some good tips. If there is a specific question you don't find an answer to, feel free to ask
http://www.t-shirtforums.com/forumdisplay.php?f=15