Updating my Premiere and download trial After Effects

• I use Premiere 6.5 , Shira suggested me, I should update to Premiere Pro which can save time in redering video. Besides, I need After Effects to do "Mask", so I download both the legal trial version from Adobe.
• To download and install took me almost the whole afternoon and I can't do anything
• Finally, both softwares installed in my laptop. But when I open the software, my laptop shut down... I close and restart my laptop, still not solved...
• another classmate said, this is because Premiere Pro and After Effects will cause problem on my PC system and Chinese interface. I am not sure whether it's true or not, anyway, I can't open it, I have to remove them to let my laptop back to normal operation.
• again, it took me long time to remove and I can't do anything in video editing or masking...
• final solution is: I still use Premiere 6.5, and download the Mac After Effects trial version to studio computer to do mask.