Mark444, if your using the new pokecharms server there are some bugs that need to be worked out. Follow these steps.
1. Make your training card.
2. When you finish click finish, finish editing and the right click the card and save it into your documents ( or wherever )
3. Go onto rayquaza and send a PM to yourself. Right under the PM Subject you see a bunch of buttons. Click on the 15th button and upload your trainer card. Then follow the link OR copy and paste the BBCode straight from there. Then add it to your signature.
4. Go to preferences and click -- always show signature.
Hope I could help