MS IE5 + ftp proxy

Problem: IE5 doesn't use proxy for FTP connection if option "Enable folder view for FTP sites" is checked. This option is checked by default. Configuration: tested in 2 configurations: 1. Windows NT 4.0 wrkst + SP5 + IE5.0 2. Windows NT 4.0 wrkst + SP6a + IE5.01 both has a problems. There is no...