Brother Printer Driver Will Not Install

If you check posts by chuy123, he had the same problem as I do.An error message appears during installation of the Brother printer driver as follows: "An error occurred when copying file BRSM9569CDW_0000.DSI. Cannot copy file to destination directory." I spent over an hour with a Level 5 tech support person at Brother and he could not solve the problem. Any suggestions as to what can possilby be blocking the file from being copied?

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows XP Professional, Service Pack 3, 32 bit
Processor: Intel(R) Pentium(R) D CPU 3.00GHz, x86 Family 15 Model 4 Stepping 4
Processor Count: 2
RAM: 2046 Mb
Graphics Card: NVIDIA GeForce 8400GS, 1024 Mb
Hard Drives: C: Total - 39542 MB, Free - 13132 MB; F: Total - 20316 MB, Free - 12522 MB; G: Total - 26231 MB, Free - 21542 MB; H: Total - 29721 MB, Free - 29574 MB; I: Total - 30914 MB, Free - 30175 MB; J: Total - 45739 MB, Free - 41362 MB; K: Total - 21108 MB, Free - 6293 MB; L: Total - 21108 MB, Free - 21040 MB;
Motherboard: Dell Inc., 0X8582
Antivirus: Avast, Updated: Yes, On-Demand Scanner: Disabled