将下面的代码拷贝进记事本，保存问reg格式文件，双击导入注册表！

Windows Registry Editor Version 5.00

;PNG file association fix for Windows XP

;Created on May 17, 2007 by Ramesh Srinivasan

[HKEY_CLASSES_ROOT\.PNG]

"PerceivedType"="image"

@="pngfile"

"Content Type"="image/png"

[HKEY_CLASSES_ROOT\.PNG\PersistentHandler]

@="{098f2470-bae0-11cd-b579-08002b30bfeb}"

[HKEY_CLASSES_ROOT\pngfile]

@="PNG Image"

"EditFlags"=dword:00010000

"FriendlyTypeName"=hex(2):40,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,\

00,6f,00,6f,00,74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,\

32,00,5c,00,73,00,68,00,69,00,6d,00,67,00,76,00,77,00,2e,00,64,00,6c,00,6c,\

00,2c,00,2d,00,33,00,30,00,35,00,00,00

"ImageOptionFlags"=dword:00000003

[HKEY_CLASSES_ROOT\pngfile\CLSID]

@="{25336920-03F9-11cf-8FD0-00AA00686F13}"

[HKEY_CLASSES_ROOT\pngfile\DefaultIcon]

@="shimgvw.dll,2"

[HKEY_CLASSES_ROOT\pngfile\shell]

@="open"

[HKEY_CLASSES_ROOT\pngfile\shell\open]

"MuiVerb"="@shimgvw.dll,-550"

[HKEY_CLASSES_ROOT\pngfile\shell\open\command]

@="rundll32.exe C:\\WINDOWS\\system32\\shimgvw.dll,ImageView_Fullscreen %1"

[HKEY_CLASSES_ROOT\pngfile\shell\open\DropTarget]

"Clsid"="{E84FDA7C-1D6A-45F6-B725-CB260C236066}"

[HKEY_CLASSES_ROOT\pngfile\shell\printto]

[HKEY_CLASSES_ROOT\pngfile\shell\printto\command]

@="rundll32.exe C:\\WINDOWS\\system32\\shimgvw.dll,ImageView_PrintTo /pt \"%1\" \"%2\" \"%3\" \"%4\""

[HKEY_CLASSES_ROOT\SystemFileAssociations\.PNG]

"ImageOptionFlags"=dword:00000003

[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.PNG]

[-HKEY_CLASSES_ROOT\Mime\Database\Content Type\image/x-png]

[-HKEY_CLASSES_ROOT\Mime\Database\Content Type\image/png]

[HKEY_CLASSES_ROOT\Mime\Database\Content Type\image/x-png]

"Extension"=".png"

"Image Filter CLSID"="{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}"

[HKEY_CLASSES_ROOT\Mime\Database\Content Type\image/x-png\Bits]

"0"=hex:08,00,00,00,ff,ff,ff,ff,ff,ff,ff,ff,89,50,4e,47,0d,0a,1a,0a

[HKEY_CLASSES_ROOT\Mime\Database\Content Type\image/png]

"Extension"=".png"

"Image Filter CLSID"="{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}"

[HKEY_CLASSES_ROOT\Mime\Database\Content Type\image/png\Bits]

"0"=hex:08,00,00,00,ff,ff,ff,ff,ff,ff,ff,ff,89,50,4e,47,0d,0a,1a,0a

[HKEY_CLASSES_ROOT\CLSID\{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}]

@="CoPNGFilter Class"

[HKEY_CLASSES_ROOT\CLSID\{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}\InProcServer32]

@="C:\\WINDOWS\\system32\\pngfilt.dll"

"ThreadingModel"="Both"

[HKEY_CLASSES_ROOT\CLSID\{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}\ProgID]

@="PNGFilter.CoPNGFilter.1"

[HKEY_CLASSES_ROOT\PNGFilter.CoPNGFilter]

@="CoPNGFilter Class"

[HKEY_CLASSES_ROOT\PNGFilter.CoPNGFilter\CLSID]

@="{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}"

[HKEY_CLASSES_ROOT\PNGFilter.CoPNGFilter.1]

@="CoPNGFilter Class"

[HKEY_CLASSES_ROOT\PNGFilter.CoPNGFilter.1\CLSID]

@="{A3CCEDF7-2DE2-11D0-86F4-00A0C913F750}"