Windows needs quotes around the name with spaces, so windows wants to see:

"D:\RSA Security\RSA Authentication Manager\utils\tcl\BIN\tcl-sd.exe" 
+$ARGV[1]
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To do this then, you need to

system ("\"D:\\RSA Security\\RSA Authentication Manager\\utils\\tcl\\B
+IN\\tcl-sd.exe\" $ARGV[1]");
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or nicer looking is

system '"D:\RSA Security\RSA Authentication Manager\utils\tcl\BIN\tcl-
+sd.exe"', $ARGV[1];
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By the way, in the "D:/\RSA.." the /\ sequence is all wrong