Quick question about generating bitcoins

[spekoner]

Before i invest in a rig i wanted to just understand the process of bitcoin mining.. so im mining with just 1 radeon hd 5770, getting about 150,000 khash/sec.
its been about 3 days and nothing. my question is, do you generate 1 bitcoin at a time? or a whole block at a time? thanks

[lessPlastic]

It's now pretty much impossible to mine solo. You pool mine, which means you join a pool and mine for them. The whole pool gets a block to solve (a block holds 50 BTC) and it gets solved by the pool, which pays out according to how much work you put in.

[swusc2]

Yes you can only find a Block which is 50 BTC if you mine solo. At your 150 Mhash, it would take you and average 188 days to generate 1 block.