<p>I've done this before in C++ by including sqlite.h but is there a similarly easy way in C#?</p>

There is a list of Sqlite wrappers for .Net at
http://www.sqlite.org/cvstrac/wiki?p=SqliteWrappers
. From what I've heard
http://sqlite.phxsoftware.com/
is quite good. This particular one lets you access Sqlite through ADO.Net just like any other database.