have a question regarding playing back mini dvd-r's on my PC

[Bamahusker]

First of all,i was a member here a long time ago,but haven't posted in a long time. Anyway,I have Windows Vista,and my PC DVD Drive is on it's side,and when i put the mini DVD-R,after i get it in the drive correctly,it sticks until i close the door,then it tries to fall out. Is there an easier way apart from laying the mini tower on it's side so the tray will be straight? i can play them back on stand alone DVD's just fine but i just wanted to know how to play them on the Mini Tower. I appreciate your help in advance.

[minidv2dvd]

laying it on it's side is about the only way to play them.