You coud also try Inno Setup Unpacker 0.18:
Code:
http://sourceforge.net/projects/innounp/
You can also include an entire folder plus Subdirectories using just 1 line with Inno Setup:
Source: {app}\Phantasy Star Universe\*"; DestDir: "{app}\"; Flags: ignoreversion recursesubdirs createallsubdirs overwritereadonly
This creates an .iss file of 1.5kb instead of 203kb and will compress the main folder and all sub folders without creating hundreds of lines of un-necessary code
