Thanks a lot for ur reply..
I tried using chdir also bt no use.
what i tried is ,
system 'chdir /D c:\\mnt';
system("chdir c:\\mnt");
even simply
chdir (c:\mnt);
chdir('c:\mnt');
`chdir...

i m using perl script to do something where i want to change my current directory to mnt in c: only.. bt using function

system("cd c:\mnt"); is nt working.

system("dir"); is working properly...