Budious my friend - you are a living legend! Excellent installer, simple to use, quick to download, and problem free - save one.... I quickly scoured the post to see if anyone has ran into this - apologies if its been covered before, but i'll add my expereince incase anyone runs into the same prob. I am using the UK version (which as I'm sure you all know was called 'Supremacy'). Using Budious's fine knowledge of registry editing (found back on page 1 of this same post) I was able to surmise that the following two keys needed to be changed: To quote Budious's post: 2) Locate the branch for your operating system. Win32 - [HKEY_LOCAL_MACHINE\SOFTWARE\LucasArts Entertainment Company LLC\Star Wars Rebellion] x64 - [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\LucasArts Entertainment Company LLC\Star Wars Rebellion] NB: Have only tried this OS 3) Right-click the key and select "Modify" for each of the following keys to modify the CD-Rom drive letters: "DllLocation"="D:\Rebellion" - Change this to "D:\Supremacy" "TooBigLocation"="D:\Rebellion" - Change this to "D:\Supremacy" It seems to be working so far - I haven't really played for more than 10 mins, so will let you know if any probs. Otherwise I shall be happily playing for a good long while! Budious - Thankyouthankyouthankyou! (again)