Hello.  This is my first post.  I want to thank everyone who has gone ahead and found out how to do all of these things.  Now, I recently purchased a Dell E6410 off eBay for the sole purpose of installing OSX.  It has Intel graphics, and an Intel wifi card.  I found the earlier posts on how to make a USB installer and how to insert the Extras and all of that, and it seems to work about 85% or better.  The one thing I am having a problem with is the (almost) constant movement of the cursor on its own.Generally, it seems to "flow" downhill from right to left.  It doesn't matter if I am using the trackpad or an external mouse.  The puzzling thing is that it doesn't happen all the time, but more than half the time.  Is there a fix for this? 
  
Thank you.