I believe I have installed SQLExpress ok but using the command prompt after that does not track

I am at the command prompt after installing SQLExpress and typing in the following: sqlcmd -S roger-xp-x2\SQLExpress -E and I get the following response: 1> and at that point I type in sp_grantlogin [roger-xp-x2\Roger and I get the following response: 2~ and not 2> I then type go and get a 3~ which I am guessing the tildes indicate errors. Any ideas where I am going amuck?

Roger

it looks like your missing a closing "]".|||

Thanks Dan, It only sounds too simple but I am hopefull that is all it is.

Roger