sources.list--where to point?

[Gary Turner <kk5st@swbell.net>]

I have finally managed to get my little potato box online and want to
get current from 2.2r0(!).  Now the question is, where do I point apt in
/etc/apt/sources.list?  <<-- that is the right file?

tnx,
gt
Yes I fear I am living beyond my mental means--Nash