win-7 host win-xp laptop trying to connect to home network

Hi this is my second thread and I appreciate the quick help I got from the first one.

I have never been able to do it in the past with this xp laptop but I was hoping (since I got such great help in my first question), that you guys might be able to help me once again.

I researched in youtube for a way to connect my son's xp laptop to my windows 7 home network, of which my 2 other laptops connect fine to. The people in youtube seem to do it just fine, but their instructions (in each of the videos that I've found), always skip a step or two or are not defined enough with explanation.

My homegroup consists of the following:
Windows 7 HomePremium desktop with Linksys WRT54G and cable-modem
Brother MFC-295CN printer called "Broski"
Windows 7 pro laptop called "Frank"
Windows 7 homepremium laptop called "Josh"

and the laptop I want to connect is Windows XP sp-2 laptop called "Jim"

The only thing I want to tackle first is only to get my winxp laptop to be able to use Broski.

I appreciate any help.

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