networking/configuration

You could need anything from a WiFi Access point with WiFi Adaptors in every machine to a Hub/Switch and a lot of CAT5 cable.

If you could be a bit more specific in your question I could give you a better answer but your statement rather than a question leaves a lot to be desired in the way of supplied information to be able to provide a acceptable answer.

[i]we have a laptop Toshiba, set up siemens modem dsl broadband, additionaly have a gateway pc network ready. Not sure what equipment i need to complete network[/i]

Like what or how do you wish to connect these to a Network and what are you hoping to achieve. If you have 2 NIC connections in the gateway you could feed one with the DSL Modem and a crossover cable to the Note Book.

Or if the Siemens modem has several Cat 5 ports on it you could feed each computer from that or you could use a USB Cable to the gateway and a CAT 5 to the NB.

It really depends on what you want to do.

Col