Possible Duplicate:
Is it possible to get the tux logo on the text based boot?
I want to add jpg logo in Terminal..but not ascii format
Possible Duplicate:
Is it possible to get the tux logo on the text based boot?
I want to add jpg logo in Terminal..but not ascii format
 
    
    Right-click -> Profile -> Profile Preferences -> Background:

UPDATE:
Apparently the question is about how to add a greeting message to the Terminal:
Usually this is done by adding a message to /etc/issue, /etc/banner or /etc/motd, depending on what conditions you want the message to be displayed.
/etc/bash.bashrc might work as well:
echo "  I'M THE GREAT CORNHOLIO!!!  "
echo "       ________________       "
echo "      /                \      "
echo "     / /          \ \   \     "
echo "     |                  |     "
echo "    /                  /      "
echo "   |      ___\ \| | / /       "
echo "   |      /           |       "
echo "   |      |     __    |       "
echo "  /       |       \   |       "
echo "  |       |        \  |       "
echo "  |       |       __  |       "
echo "  |      __\     (_o) |       "
echo "  |     |             |       "
echo "   \    ||             \      "
echo "    |   |__             \     "
echo "    |   |           (*___\    "
echo "    |   |       _     |       "
echo "    |   |    //_______|       "
echo "    |  /       |_|_|_|___/\   "
echo "     \|       \ -         |   "
echo "      |       _----_______/   "
echo "      |      /                "
echo "      |_____/                 "
