No, it doesn't matter. Your bankroll is what you are willing to risk to play poker with. I wonder what jack's "real" BR is - will he give up if he donks (or bonks) off every penny in his account? My guess is no. So perhaps he IS bankrolled for $10NL and just doesn't realise it, in which case there's really no need for him to cross swords with people who could really help him, like Chardrian.

Jack, addressing you personally for a moment. You are clearly very bright, you have real enthusiasm for the game and you really want to learn.

However, I think you rate yourself a little too highly - you assume that because your brain has always come through for you before, it'll be the same with poker. And, in all likelihood, it will. BUT NOT YET.

Poker is a game where experience is FAR more valuable than being top of your maths class. You can calculate your odds to the fifth decimal place as much as you like, but until you get a feel for the game that only thousands upon thousands of hands can give you, you will continue to make mistakes and misreads which will never disappear entirely, but will get less and less as you get more and more savvy.

Imagine poker is a musical instrument. You can understand the workings of the instrument 100%, but until you've spent hours and hours practising it, you won't be able to play it well.

This is why, for beginning players most of all, you MUST stick to the rules that allow people to learn, make mistakes and progress without bankrupting themselves. I'm sure $10NL is fine for you as a learning zone, so stump up $150, bung it on Stars or wherever and improve your game without constantly worrying about $4 here or $7 here. Being constantly aware of cash fluctuations is a destructive habit which detracts from concentrating on playing good poker and, whether you like it or not, will lead to bad habits where you associate hands or plays with good or bad results when they need to be played on their own merit within the context of each individual game. It'll also exacerbate any tilting you happen to do.