when I use the command " package require vtk",the tcl console answer that "can't find package vtk". I have installed the vtk in the directory of"C:\Program Files\vtk42". but i don' know how to config the path.please lend me a hand.thanks!<br><br><a href='http://mail.21cn.com/huodong/0808/index.html' target='_blank'><img src='http://mail.21cn.com/free/sj_mfy_54060.gif' width='540' height='60' border='0'></a><br>ÙQ€h