Tell me what version of what OS you are running PuTTY on. Try to give me as much information as you can to help me see the problem for myself. Now when I use PuTTY, the font is right. So they must be doing something differently from me, like using a different font, a different OS, selecting the font at the wrong time, or something, and I need to know what. Give me lots of details.
Details are good.
Read your comments back to yourself and ask if they make sense. Try not to assume I know what you wanted to happen. If you think something is not right, tell me exactly what it is, and exactly what you think it should be. If you think you can, try fixing the problem yourself. Try reading my essay on How to Report Bugs Effectively .