1) Create a new 16million image with transparent background Place your text (it will be best to do each letter separately)then export your text as a picture tube File|Export|Picture Tube use all of the default settings except for the step size (change that to 1) then give your tube a name and save it, once you have done this you save your image as a psp image, as you will need it later. 2) Open a new window 16million colours/white background. Choose the picture tube tool from the tool pallete and select your saved tube from the dropdown box make sure the scale is set to 100 and step to 1. 3) In your new empty window create a new lay (layers|new) accept all the default properties. On this new layer left click once to put down a copy of your text tube put it towaards the upper left corner rather than centred and make sure none of the tube is lost outside the boundaries of the window.(make a note of where you clicked to place the tube! 4) Hold down yur Shift key and position your cursor a little bit down and to the right of where you clicked last time (approx 3-5 pixels away in each direction). By holding down the shif key you have placed a line of tubes between the two click points spaced 1 pixel apart. 5) Reopen you original text image use the selection tool to draw around the text. Be sure that the Antialias box is checked and Feather is set to 0 6) Set your foreground colour to white and backround colour to dark grey. In the style pallete set the foreground style Gradient. In the gradient style set Horizontal and vertical offsets to 50 and the repeats to 3 make sure the Invert Gradient box is unchecked. 7) Use the flood fill tool to fill your image selection then copy your selection Edit|Copy 8) Return to the window where you laid down the picture tubes and create a new layer above the ones already there then Edit|Paste|As New Selection and position the selection over the existing image 9) Turn off visibility for the white background layer then Layers|Merge|Visible Copy the image and paste it into another image or save it as a picture tube.
I know this seems complicated but its easier to do than describe but should give your text a nice 3d effect