As above...dont get Dyslexia and Dspraxia confused!
Some of the greatest minds were Dyslexic...Einstein for a start...
If you have concerns about your abilities/inabilities seek an Educational Phsychologist. They will be able to run some tests (3-4 hours) and tell you exactly where your weaknesses are.
I know a very good one who is relativley cheap. Drop me a PM if you want more details.