LAN, Ad Hoc, File Sharing, IP Address, when we want to makes our Windows 7 or we can called Win7 conected each other between XP with Win7 or Win7 with XP, or Win7 to Win7, this is the base lesson.
The point is, if we decide want to use LAN, set the IP address first, for XP recomended IP is 192.168.0.1 for the Server and for Client 192.168.0.2 just for example, make sure "ping!" can be do it. select the folder or HardDrive you want to be shared. here the step by step we do sharing.
LAN
1. make sure the IP addres are conected, i have conclussion that IP address doesnt make significant things for LAN conection. for Win7 recomended make it become 192.168.137.1 for the server, but for client 192.168.137.2, i dont know why windows makes this ip default for Win7. just let it be... like that okay.
2. Right Click your harddrive or folder you want to be shared, Right Click > Properties > Sharing > (and you fine the sentence "if you understand the risk but still want to share the root of the drive, click here) Click this >
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Ad-Hoc
1. This Conection maded by Wi-Fi, make sure you have activated your Wi-Fi, or check your Wi-Fi Driver (**right click My Computer > Properties > Device Manager)
2. Lets Made Ad-Hoc Conection, go to Control Panel