'cd' in shell-script or .profile

[Weil Timothy Robert]

I'd like to be prompted after login as to which directory
I'd like to be working in -
 
Tried a simple prompting via shell script; also tried
inserting same prompting in .profile (Ultrix running
Korn Shell)...
 
results were similar - a 'pwd' would indicate that I'd
changed to the selected directory but UNIX kept me
logged into $HOME....any other tricks to try?