Very simple solution
Their can be many ways but I think use simple one it?s easy to trouble shot
Well you want share file through wireless so it logical you will have two wirelesses network card. (Laptop have wireless card in built mostly) for your desktop u need to get one if u don?t have.
You need a router when you when want send traffic between two different network.
For example: - from 192.168.0.0 to 172.16.1.0 network.
But in you case you can give both wireless IP address from same pool. 192.168.1.2 And 192.168.2.3 (192.168.1.1 is for you wireless device) subnet 255.255.255.0
So there is no need for the routing as there are in same ip address pool. All you need is wireless access point (like switch) not a router. Disadvantage 1) slow 2) unsecured. Advantages 1) mobility.
You can use WEP encryption but any one can break it very easy with in 20 minutes.
If want you can just use a cross over cable and also connect both of then to you Ethernet card in case if you have kept option open for wired solution too.advantage secure and faster you go up to 1000mbps. Disadvantages limited mobility
So make sure what ur priority flexibility or security.
I have my desktop which is connected to one of my DSL connections (I have two) through ethernet. My bro's giving me his laptop as he doesn't need it now. I plan to have the other connection for my laptop when I am working.
Now, I wish to have my desktop and the laptop connected wirelessly. Also have the desktop use one DSL connection and my laptop use the other
I haven't bought a router yet because I am not sure which one to buy. Now the problem I see is both the DSL connections will be on the network some how. The DSL routers have the facility to connect through USB as well but I don't want to connect any wires to my laptop
So here's what we have:
1. A desktop and a laptop
2. Two DSL connections (routers having facility to connect through ethernet as well as USB)
3. A wireless router (on your recommendation)
What I want at the same time: My laptop to share files with desktop wireless. My desktop and my laptop each use a different DSL connection to access the internet.
Kindly guide me, I am new to the wireless field