Can I update Plesk 8.1 from Plesk 7.5

[aracnet]

I am planning to buy plesk 7.5 with powerpack windows 2003 server from The Planet.because of they are not offering 8.1 currently , I wanted to upgrade it for myself:
- Do i need extra key for this ?
- Has some one done it before?

 

[sergius]

You need to renew key for 8.1