I recently finished my first all grain brew wich was also my very first brew I chose to brew a lager and everything is going perfectly my only question is that in my book the instructions for lagers it says to add 1/2 a pack of yeast with corn sugar at bottling time. Does it matter what kind of yeast I use?
No, it won't matter as long as it is a brewing yeast. Unless you're lagering it for more than three months and using finings, I wouldn't worry about it though. There should be enough yeast in suspension to carbonate.
Once the wind has been broken, it cannot be fixed.