Lines as a combobox item

I have a small form that outputs a line graph, and a few options that allow the user to change each line's width and color. What I'd also like to add is the option to change the style of the line (dashed, dotted, etc), and I'd like to do this through a drop-down menu that displays a sample of what the line looks like. The problem I have is that I can't figure out how to write a line inside the combobox. If anyone can help, I'd greatly appreciate it.

You could use an Image Combo and make small gif pictures of the lines...just a thought

That's something I thought of, but my users have different background/foreground color schemes, and I need the lines to stay the foreground color.

Hi
from memory, programs like Frontpage, Word, Publisher etc show the line style in Black on White so it wouldnt be too unconventional for ur program to offer the same functionality. :)
Regards
Stuart