hey man i know wat ur thinking i too go to university and its not a piece of cake to actually find ways of approaching these girls. If u cant spot her before class, that leaves u two options
during class
after class
most of the classes i go to its often quiet and people are reading or studying soo u cant really wonder over and sit next to her
that leaves us with one option:
AFTER CLASS.
u can go direct, or in direct.
its all about how ur able to handle urself. she might have a boyfriend, she might not be interested, soo if u go direct u needa accept that she might not be very keen in chatting to you.
Going direct would be something along the lines of "hey how u doing, im dave, and i just wanted to come over and meet you, i think your gorgeous....and soo on.
going indirect would be something like "hey how u doing, im dave, hey u know the new group assignment we got, would u like to make a group together? blah blah along those lines.
wait till class is over, if shes alone great, if shes with friends, well tough luck u still gotta go brother. remember if u leave it too long and finally work up the balls to approach her, she'll know uve been in her class for ages and only now just came up to say hi?
do it fast man, soo if it doesnt work out u can move on.
best of luck
CHAT