Cem,
The CWGraph Axis fonts and formats are configurable. You may have to play around with the configuration depending upon what you want to accomplish.
(1) Place a CWGraph onto your form and then access the Properties page by right clicking and selecting "Properties...".
(2) Select the "Advanced" tab. In the Parts list you should see the X and Y axes. Select an axis and notice you can set the Font. Deselect "Use Control's Font". This allows you to use a custom font for an axis label.
(3) Select "Font..." to change the font of the axis. The "Symbol" font replaces all alphabet characters with greek alphabet characters. However, numbers remain as "123...".
(4) Now you should be able to insert the symbols in to your labels. For instance, if you have a symbol that represents a unit, you set the unit by going to the "Format" tab. Make sure the same axis is selected under the drop down in the upper left hand corner. If you wanted to insert a symbol such as &Delta, then select "Symbolic Engineering" and set the Format String to k"D".
If you give a more specific description of what you are trying to accomplish then I would be happy to help.
Thanks,
Tyler Tigue
Applications Engineer
National Instruments