Help with directory for ftp program

Hello,

I am building this little ftp program for a person I know. I have made it really simple for them to use as they dont have the knowledge like me for computers. I have my little ftp program working, but right now im using the address as the ip address, so when I upload its going into the main directory. How do I point the address to a certain folder in the directory?

Do I do this

**.**.**.***/blah/blah

is that how I point it to a certain directory or what?

Connect to the server first. Then issue a cwd (change working directory) command to the server to change to the directory you want - cwd /blah/blah