To insert an image in a cell you can use SetTableCellVal (or SetTableCellAttribute with ATTR_CTRL_VAL which should be faster). As stated in the CVI help for the "value" parameter:
"If the cell type is VAL_CELL_PICTURE, the function expects an id of the bitmap containing the new image. Must be a value obtained from one of the following functions:
NewBitmap, GetBitmapFromFile, GetCtrlBitmap, ClipboardGetBitmap, GetCtrlDisplayBitmap, GetPanelDisplayBitmap, GetScaledPanelDisplayBitmap, GetScaledCtrlDisplayBitmap"
Hope this helps
Roberto