hey one more different question. I wrote my book, and its done but i'm dyslexic and lets just say my grammer and spelling is less then par. Now I polished the first few sample chapters but before i send a query letter should i have the whole book corrected?
You're whole book should be as good as you can make it - not just proofread but revised and beta read and revised some more, before you query.
The manuscript should be in the best condition it can be in, especially these days as there is less time for agents and editors to do revisions. So, closer to publishable condition the manuscript it, the better your chances.
You can look for beta readers in the beta readers forum.
Have you posted any of it for critique in the Share Your Work forum? If you haven't I suggest doing so - but read the sticky threads first.
good luck.
~suki