SOLVED In-Depth Network Simulator/designer??

Hello everyone i am looking for an Network Simulator /planer/designer i have used Cisco Packet Tracer however i am looking for something that is more in depth for example: Testing of bandwidth, and more advanced setup of servers. Basically i want to be able to create an entire computer network from an t3 line all the way to the lonely little computer off in the comer that no one ever uses ios support like ciscos' program is not necessary as long as it simulates drop packets and ip, mac , vpn , switching, bandwidth and every thing else in between. Anyone have any ideas? i couldn't find something like that on Google but maybe i wasn't looking hard enough.

Is there anything about this which doesn't suit your needs?
http://www.gns3.net/

Not my area of expertise, hope it helps.

Thanks looks like this will to the trick

I'd be interested in what you think about it once you sink your teeth in.

youre primarily going to need ios images and the idlecpu setting is a pain to work with but once you get it right the sim is a whole lot of fun.