I would be surprised if the laptop doesn't have enough hard drive space, as this desktop sure seems to, but stranger things have happened. I installed the base game and UNI on the laptop from CDs a while ago, and then installed AL from its CD. One thing I haven't tried yet is uninstalling everything, then reinstalling everything.
What you're saying also makes me think of setting aside enough memory for a given piece of software (this too has a techgeek term that I can't remember), and it's just possible that there isn't enough reserved for my laptop. This I will also try. Of course I'm open to other suggestions too.
By the way, I love the caek-eating lolcat. I have a couple of cats here that would do the exact same thing.
EDIT: More things tried, after verifying that the better part of 100 GB of hard drive space remained.
1. Tried running program in Windows XP emulation mode. Result: FAIL
2. Increased size of virtual memory to a minimum of 7 GB. Result: FAIL
3. Uninstalled AL. Tried running base+UNI using the UNI CD. Result: success. The game generated a complete "The Sims 2" folder, as it should.
4. Reinstalled AL. Tried running base+UNI+AL again using the AL CD. Result: this time the opening cinematic worked after the opening splash screen. At its conclusion, I saw the "The Sims 2/Apartment Life" opening screen and the music started playing. I thought I had it beat until about 15 seconds later, when there was an audible CLICK and it froze up. PHAIL
The CLICK is making me think that maybe the sound card needs its driver updated too, even though I'm pretty sure it's nothing fancy and integrated on the motherboard. I will try that next.
EDIT 2: Incredibly enough, that was the problem. Game now loads just fine.