Uverse 3801HGV and Synology DS212j

[llbts1]

NEWBIE ALERT!!! Okay, I have driven myself nuts on trying to get my diskstation on the internet. I want to access files, pictures, videos and music when I am away from home. I have the hardware listed in my title. I can access my data wireless without issue, but do not know, or where to find the information to set up the diskstation through the internet. The terminology is all greek to me, and the EZ internet setup Synology provides is useless without there routers listed. I had read to buy a different router as listed on the EZ setup, and connect that to the uverse router and then I could use the EZ setup. Is this possible? I am stumped. Can you please tell me or direct me where I can find instuctions on how to set this up? Thank you, llbts1