You really should check Pescado's official list he linked higher up in this thread, and don't use any hacks until their authors have certified them safe. Even if a hack appears to be working, it can be causing irreversible damage in the background that you may not even be aware of until it's too late.
I've had the list. It's printed off and sitting by the mouse. I've slowly added back those that I find essential. Autoyak and macrotastics appear to be working. I understand college rampage doesn't work. I made sure all my key people graduated before installing Nightlife. The only one I was worried about was the continuouspaint. It's on the discontinued list but it seems to work just fine. I guess Boris will have to have me shot. (I have backups of my neighborhoods. If the worst happens, I can reinstall the whole nine yards. Since I restarted from scratch with University I don't have multigenerational families to lose.)
Still a little sad that my upgrade will be slower than your computer! But maybe I can upgrade again when I get that great new job ... I'm already saving my pennies for a new video card and some more RAM.
Even if a hack appears to be working, it can cause problems. I had one I had downloaded from MTS2. I've had it for a week, seemed to work fine, and then I kept noticing stuck pregnancies and parties and sims doing funny little circle dances. I took out the hack, and everything's fine now.
I put my hack folders back into the game but used SimPack2 Clean Installer to turn almost all of them off. I have less than 10 working right now. I've watched the various hackers' threads to see what problems are popping up. My game seems very playable at this point but I'm prepared to turn off those that create any problems. If the few I have continue to work, I can wait indefinitely for the fixes. I've only had one hacked object that didn't work. The modder has upgraded it so I've been fortunate. One hack I like that doesn't work was "smartserve" (?) I liked having the person cooking make the correct amount of servings. I'm waiting for dizzy to upgrade this one. I don't think this ep has had as many problems as University but I suppose it's still early. I'll keep knocking on wood and hope my game doesn't blow up. I play very slowly so all the hackers and modders have plenty of time to fix things before I get too far into the game! LOL!