How do I create a simple installer to copy files to multiple directories?

[Panarchy]

Hello

I would like to know how to create a simple installer using NSIS which will, at launch of setup, ask me to choose (from a Drop down list or radio buttons) which Operating System I am installing it on (or could auto-detect this?).

Firstly, I'll explain what I need done.

I need 2 files (.exe and .ini) copied to the following directories;

On Windows (XP, Server 2003 and everything before);[list=1][*]%WINDIR%\servicepackfiles\i386[*]%WINDIR%\system32\dllcache[*]%WINDIR%\system32[*]%WINDIR%[/list=1]On New Windows! (Vista, Win7, Server 2008 etc. including x64);[list=1][*]%WINDIR%[*]%WINDIR% \servicepackfiles\i386[*]%WINDIR% \system32\dllcache[*]%WINDIR%\SysWOW64 - (NOTE: Probably only on Vista x64)[*]%WINDIR%\winsxs\amd64_microsoft-windows-notepad_31bf3856ad364e35_6.0.6001.18000_none_cb3928ff285d2ca9 - (NOTE: Probably only on Vista x64)[*]%WINDIR%\winsxs\amd64_microsoft-windows-notepadwin_31bf3856ad364e35_6.0.6001.18000_none_9ee86862b36a7eff - (NOTE: Probably only on Vista x64)[*]%WINDIR%\winsxs\x86_microsoft-windows-notepad_31bf3856ad364e35_6.0.6001.18000_none_6f1a8d7b6fffbb73[/list=1]Any advice on how I could do this would be truly appreciated.

Thanks in advance,

Panarchy