How can I configure Windows 7 and XP to connect wirelessly, for file sharing

[floccinaucini]

My computers:-

* Windows 7 Home Premium in Acer Aspire 5250 laptop - configured to connect wirelessly to the Internet Modem Sagemcom f@st 2864, provided by ISP (Bell).

*Windows XP Professional desktop - configured to connect wirelessly using USB Wireless adapter (TP-LINK), to the same Internet Modem provided by the ISP.

The 2 computers connect wirelessly, to the same Internet Modem but independently of each other. My Internet connection is Broadband. Also, the computers are shared by all in the house and there are no separate user accounts or passwords. All have equal access to everything

I need help to configure the 2 computers for file sharing between them. Cable connection is not possible due to geographical considerations. I am new to this, so I need step by step instructions please.

Thank you

[Geek-9pm]

Hello, I would like to help, but I have never done exactly what you want.
You are using two separate Wireless routers. -Right?
To do list:
  One one time your did have both computers  connecting via Ethernet.  -Right?
  At least one of the computer can switch between the Wireless Provider. -Right?
Next, but not very good:
You could tie both computers to a 'Cloud'' server on the  Internet. But that is slow, users up your Internet bandwidth and may cost money.
Better:
Can you  alter or replace at least one of the routers? Some routers will allow two separate wireless links with independent traffic rules.
Best:
You need to set up an local only WI-Fi that only connects the two computers. Is is possible, but incurs the extra cost of getting two AP routes that can do Ad-Hoc protocol.
That is  are the best I can do. I have never been successful in sting up Ad-Hoc protocol. You have to have the right kind of routers to do that.
This link below helps explain what I mean. Sort of.
http://www.makeuseof.com/tag/turn-windows-wifi-hotspot-share-internet-connection/
 

[camerongray]

When did they say they used two routers?

configured to connect wirelessly to the Internet Modem Sagemcom f@st 2864, provided by ISP (Bell).
[snip]
configured to connect wirelessly using USB Wireless adapter (TP-LINK), to the same Internet Modem provided by the ISP.

They have a single router...

[floccinaucini]

Hello Geek-9pm,

I have a single Wireless router (modem). I think something like "homegroup" sharing is more suitable and easier for me (there must be other equally good methods that I don't know about). My problem is, I don't know how to configure the 2 computers.

Regards,

[Geek-9pm]

I have a single Wireless router (modem).

My bad.  I mid-read.
I thought he wanted to connect with a neighbor.
And they had two ISP companies.

[floccinaucini]

Is there a tutorial in this forum on this subject?

Thank you

[Geek-9pm]

OK. I will try again.
The tutorial is simple/ Just do the Network Wizard again om both computers and rared the instructions.
You already did that?
You have to do it again.
It works on the third time.

[floccinaucini]

You nave not given a link to any tutorial!

Thanks,

[Geek-9pm]

Have you even tried the Network Wizard?
That is the key . If you ignore the Network wizard, your are going to miss the point. The tutorial will tell you to do the network wizard.
If both computers get into the internet via the same wireless router, it is all a matter of using the right setting sin the Wizard.
Here is a very good, simple link about the common issues with XP and 7 in a local network configuration.
Share Files and Printers between Windows 7 and XP
Please read it over carefully. 

[floccinaucini]

Its' done!  Thank you very much.

Best regards