I sent bitcoins to my wallet before it had synced. is there ANY way i can get my coins back? I downloaded Bitcoin. qt and started the sync (which was going to take about 6 days UGH) so about 4 days into it i tried to open the app and Now the app shows "error loading blkindex.dat" So i cannot access my wallet on my computer and never really got a chance to backup or encrypt anything... 

I've tried using blockchain.info's desktop sync function but literally nothing happens when i press "download address list" on step 3...????

I have also tried MtGox but i can't find anywhere to upload my wallet.dat file...

Is there ANY WAY i can get my coins? 

I'm running Mac OS X. Be as specific as you can please :)
As long as your wallet.dat file is uncorrupted/unstolen, your coins are fine. Try backing up the wallet.dat file, uninstalling Bitcoin, then reinstalling.