http://us.blizzard.com/support/article.xml?articleId=21149

--------------------- - patch 1.15.2 --------------------- Feature Changes […]
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- patch 1.15.2
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Feature Changes

- StarCraft and StarCraft: BroodWar no longer require the CD while playing the
game. To play without the CD, please follow the following instructions:

- Windows Users:
- Make sure you have "Hide extensions for known types" unchecked under
Explorer Folder Options.
- If you own only StarCraft, copy "INSTALL.EXE" from the StarCraft CD to
your StarCraft folder and rename it to "StarCraft.mpq".
- If you own StarCraft: Brood War, copy "INSTALL.EXE" from the StarCraft:
Brood War CD to your StarCraft folder and rename it to "BroodWar.mpq".

- Mac users:
- If you own only StarCraft, copy "StarCraft Archive" from the StarCraft CD
to your StarCraft folder.
- If you own StarCraft: Brood War, copy "Brood War Archive" from the
StarCraft: Brood War CD to your StarCraft folder.

this patch is pretty good 😁 most nocd cracks for the game would only let you run either the normal game or the expansion and not both the expansion/normal game because the main data file (install.exe) has the same name on both discs. now with this update that is no longer a issue.