For people saying that you need to put HEAPS of time into OGame to get anywhere, take me for example. In total I spend about 50 hours at Work and/or University per week, and am only able to log into ogame for about 10 minutes before work in the morning, and at some point during the 4 or 5 hours between when I get home, and when I go to sleep. Yet I have managed to get to about 650th, AND am still climbing slowly. If someone fleet crahsed my entire fleet (about 30 battleships, 40 cruisers, and 150 heavy fighters, it'd take me all of 4 days to completely rebuild it, not that I really would, since I never use it, and currently it just sits around asking for people to attack them and steal the debris.
As I said, the speed depends on how you play, as does the amount of time that you have to put into it in order to be successful.
Also, PLEASE DON'T turn this thread into a flamewar. Back when I used to regularly lurk the HLP forums I swear I didn't see as much of that stuff as I have been seeing over the last few days.