how can i use 2 internet connections on 3 computers.?

[Sledgehammer]

hi all,
I just purchased 2 usb broadband devices and i need to use both on 3 networked computers.
the 3 computers must be on the same network cos they share a software.

we decided to go for 2 connections as 3 will be overkill and 1 will make connection slow.

i have a router which came with one of the connection, this router also has a wireless capability.

Please how possible is this, and what do we need to do.
we dont want (2 computer sharing 1 and the last computer using 1)
we want them all to have access to both connections and we expect all computers to use the internet at the same speed.

i am curious about the success of this as i cant wait to try it out, only 1 connection is active and the 2nd connection will be activated in 3 days by my isp.

Please note:
computer 1 has ip 192.168.0.1 with an internet connection
computer 2 has ip 192.168.0.2
computer 3 has ip 192.168.0.3

since the computer that will be sharing a connection must have 192.168.0.1, that leaves us with the option of putting the 2nd connection on computer 1
i am not so experienced when it comes to networking, so i am open to new ideas.

I will be so glad if this can be accomplished, I wont mind getting another router if that will be a solution.

Thanks in advance.

[jivepacketrat]

You cannot share two Internet connections to a network unless you are using Link Aggregation Groups at both ends of the two links. At least one vendor has been successful at creating a LAG over two devices, and a couple of others are either doing this or will soon. The problem also is that they must be the same service provider. You have to be able to run link aggregation at your end of the Internet connections as well, I am unaware of any home device that will do this. The switches and routers that do this normally will cost in the thousands of dollars.
Your IP addresses are not Internet addresses they are private addresses that do not appear on the Internet. So the service provider device is acting as a router or gateway to their network and they will have a public IP address that is used by the Internet to get back to that device. The other Internet connection will also have a public IP address, to get back to that device. You have to be really careful in what you are attempting as you can cause loops towards the Internet, and that would not be good.
To do this properly you will need a high end device that supports LAG and two connections to a Service Provider that supports LAG, they are called other things by some vendors, like teaming, Multilink trunking, etc. Then you will connect both connections into a WAN port on your device, and all of your computers into that device as well. The devices usually have 24 ports at a mimimum.