hahaha  Thanks Bibas for shedding som light here...But I thought you were in your CPT!!  Did you get the OPT already?  In 2-3 short months??  I can see this thread reeking of gas right now.   LMFAO

sgurung2, during OPT your work authorization card will allow you to work ANYWHERE.  It doesn't matter where if you work until the time limit on your card.  After that, you would need to get your status changed in order to remain here legally.  Since you will be looking for another (office) job in the interim while working at a gas-station/restaurant, it wouldn't be any problem at all if you can find the office position that will eventually sponser you for the H1 later.  All the best

Sgurung2,

According to the OPT rules and regulations, you only have to work in a field that is related to your academic background and nowhere else. But, even if you work at places other than your academic background, it will not effect any thing negative to you at any time of your life including while filing H1 application. 

Good Luck! 

U can work anywhere u like. It really does not matter. I am also in my opt. But at the time of filing H-1b U must have got a decent job right know u can work in gas station, subways anywhere but at h-1 B filing u need a good sponsor and that can be any US company and the job u are doing should be related to your major. So dont worry right now but by he time of April better get a desent job or go to consultancy...