Identify Orcad Schematic entry version

Good morning,
I dug up an old project from 2005 and I should open the schematic to check some things.
This is the schematic of a XILINX XC95108-pq160 CPLD which the XILINX ISE 6.1 software then translated and compiled, to generate a JEDEC file to burn CPLD.

My problem is that I can't open schematics with the versions of Orcad Schematic Entry that I have.
Can anyone help me understand which version of Orcad Schematic Entry I need to install to see these files?

I copy here .sch file

VERSION 6
BEGIN SCHEMATIC
    BEGIN ATTR DeviceFamilyName "xc9500xl"
        DELETE all:0
        EDITNAME all:0
        EDITTRAIT all:0
    END ATTR
    BEGIN NETLIST
        SIGNAL sr_s0
        SIGNAL sr_range
        SIGNAL sr_s1
        SIGNAL sr_s2
        SIGNAL int_sr0060(7)
        SIGNAL int_sr0062(7)
        SIGNAL int_sr0064(7)
        SIGNAL int_sr0066(7)
        SIGNAL int_sr0068(7)
        SIGNAL int_sr0070(7)
        SIGNAL int_sr0072(7)
        SIGNAL osr(7)
        SIGNAL int_sr0060(2)
        SIGNAL int_sr0062(2)
        SIGNAL int_sr0064(2)
        SIGNAL int_sr0066(2)
        SIGNAL int_sr0068(2)
        SIGNAL int_sr0070(2)
        SIGNAL int_sr0072(2)
        SIGNAL int_sr0060(1)
        SIGNAL int_sr0062(1)
        SIGNAL int_sr0064(1)
        SIGNAL int_sr0066(1)
        SIGNAL int_sr0068(1)
        SIGNAL int_sr0070(1)
        SIGNAL int_sr0072(1)
        SIGNAL osr(1)
        SIGNAL int_sr0060(0)
        SIGNAL int_sr0062(0)

.....omissis.....

        IOMARKER 192 1440 sr_s0 R180 28
        BEGIN BRANCH sr_s0
            WIRE 192 1440 304 1440
        END BRANCH
        BEGIN DISPLAY 3416 2692 TEXT pag04
            FONT 36 "Arial"
        END DISPLAY
        BEGIN INSTANCE XLXI_1 3600 2800 R0
        END INSTANCE
    END SHEET
END SCHEMATIC

I can send you this file .sch if need, send me an email to   lpautas at google dot com

many tanks