Assuming both the PCs run Windows 7... do the following
1. Go to Computer
2. Right click on the drive to share and you'll see a option "share with"
3. It gives "Advanced Sharing options".
4.Click on it and you will be on "Sharing Tab" of "Drive properties".
5.Click on Advanced sharing
6. Check share this folder.
7. You can change the default permissions for the Everyone group by selecting the desired permissions (Full Control, Change, Read) under the Allow or Deny column.
8.To add other users or groups, click the Add button.
9. Under Enter the Object Names to Select, type the account name of the person you would like to add, and click Check Names.
If the account name is found, Windows underlines your entry and also adds the name of the computer to the beginning of the account name.
10. Click OK.
You are returned to the Permissions dialog box.
11.Select the added user’s account name, and then modify the permissions as desired. (as in Step 7) Click OK.
Windows 7 assigns the permissions you specified to the selected hard disk.
Follow this for visual help
How to Share an Entire Hard Disk on a Windows 7 Home Network - For Dummies
Turn off password protected sharing from Network & Sharing center > Advanced sharing settings for comfort
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A consolation for today's match : "What's the difference between a taxi and man united? A taxi wont let 6 in! Haha :rofl: "