I bought an ASIC miner but the wallet just cannot get synched. I am trying for days now and i am still 18 weeks back. Can i run my ASIC miner on a pool, while my wallet isn't fully synched and the blockchain isn't fully downloaded?
Yes you should be running something like cgminer or bfgminer which can join a pool and mine while your client is still downloading the blockchain. You only need your own blockchain to do solo mining, and unless you are running a lot of very fast asics you will want to continue mining in the pool.