Well, when I open it on the browser, the screen pops up and is completely black. Wait a bit and for a split second, I hear the music play and then it closes and leaves. I repeat and same thing happens. So I downloaded it onto the computer and started it from there. I wait, screen pops up and the music plays and I make it to the log in screen, more or less. The reason I say that is because a lot of the text is completely garbled and blanked out or something.
http://i819.photobucket.com/albums/zz120/xNaldx/Misssaigon-1.jpg
Intel Pentium Dual CPU @1.46GHz (2 CPUs) Mobile Intel 965 Express Chipset Family
I checked the Java site and it ran a test verifying I have the recommended java installed
and I believe that I have the latest drivers.
Unutile, I'm sorry to say this but your video chipset may not be able to support the game.
People in this thread were having similar problems, with similar Intel chipsets: http://forums.spiralknights.com/en/node/2410
Try updating your drivers: http://www.intel.com/p/en_US/support/highlights/chpsts/965m
Especially your OpenGL drivers: http://www.intel.com/support/graphics/sb/cs-010479.htm
Please also peek at the FAQ, in case you see some other problems that might be related: http://wiki.spiralknights.com/Technical_issues_FAQ
Good luck.