[SLUG] perl : cant locate tk.pm

[henry]

Dear Sirs:   I executed (on Redhat 7.1) a perl_script which requires Tk_lib , Then I got a message   "Cant locate Tk.pm in @INC : /usr/local/tk........."   I  use " rpm -q tk " to find out that tk8.x is installed under /usr/lib ,but I still locate Tk.pm .   How could I make the perl_script work ? or how could I modify @INC ?     Thanks in Advance' Henry