hi.......next wednesday is my first day working as internship in my boss company, I will need to take some forms to sign by my boss, and to take back to my college for the administrator to approve and stamp it. The problem is, that day is the first day I join to that company, can I just tell my boss that I wish to leave for half day for submit the form to my college? Or should I wait a few more days then do this job? I am afraid that I will leave a bad impression to my boss as that day is my first day working day, how come suddenly disappear for half day punya? anyone have better idea to deal with this situation, pls help me pls...

p/s: one more tiny question, is it suitable for me to wear black shirt black pant as the first day working in that company? somebody pls give me some opinion thx