Thanks in advance for any help.  I'm trying to get 4.8.1 to run, but keep hitting major roadblocks.  (first was a setting in machine.config needed to get the DNN app to run under XP).  Anyway, I was finally able to get the DB set up and the app to run.  However, when I click on "Login" or any other link on the app page, I either get a redirection to a page that is not found or I get a runtime error on the page "Sys not defined.  The link error goes something like this:

I start the site using http://localhost/dnn

Click on "Login", I get a page cannot be found error - and the url shows http://localhost/dnn/home/tabid/36/ctl/login/default.aspx?returnurl=%2fdnn%2fdefault.aspx

I'm sure it's something obvious I'm overlooking.