1. Download vmware workstation . Link: http://www.torrentreactor.net/torrents/956758/VMware-Workstation-6-0-0-45731-with-keygen
2. Install it on your hard disk.
3. Download the iso of windows 7. Link: http://thepiratebay.org/torrent/4602971/Microsoft.Windows.7.Beta.1.Build.7000.x86.DVD-GENUiNE.iMAGE
4. Open vmware workstation.
5. Click on "New virtual machine"
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6. Select "Typical" and click on next.
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7. Select "Microsoft windows" and select windows vista.
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8. Name your virtual machine and save it anywhere on the hard disk.
9. Select the 2nd option (NAT).
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10. Create the virtual hard disk allocating it 30gb or perhaps 20gb would be enough.
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11. Click finish.
12. Go to your newly created virtual machine and click on "edit virtual machine settings"
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13. Select memory and give it atleast 1gb RAM.
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14.Select CD-ROM and check "use iso image" and browse and select the iso of windows 7.
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15. Choose processors . 1 if you have a single core or 2 if you have a dual or quad core.
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16. Next start your virtual machine.
17. It will load the installation for windows 7 and then you just install it by following the instructions provided by the installer.
Have fun =)