I need some advice about asking a girl out?

I really like this girl and I used to talk to her often because i had alot of classes with her at school. Now the year after she has no classes with me i hardly see her but when i do she always stops and talks to me which makes me feel happy. I want to start to get to know her before i want to ask the question. Is there anything that you suggest me to do or how i should do it. I can't get her out of my mind, she is the most friendliest and beautiful girl i have ever met.I need some advice about asking a girl out?
This is a sweet question :D Now, i maybe a gay man, but i do know a thing or 2 about asking girls out :D I would suggest that the next time she talks to you, try to ';lengthen'; the conversation by asking her if she wants a coffee now, or maybe tomorrow. This is a really neutral way of saying ';i like you and i want to show an interest in you';. If the coffee ';date'; goes well, then ask her if she wants to repeat it. After that, take things from there :) A ';coffee'; can turn into a ';relationship'; faster than you think. I wish you luck my friend!I need some advice about asking a girl out?
Just get her number or msn .. Talk ...meet up like friends treat her well and after time appose a deeper relationship but don't rush :) Take her out etc .. good luck
tell her to meat you at town with her friends and bring your nice and good friends. then buy her lunch. be funny