How I can install Framework v. 3 on server 2008
Use the server manager to install 3.0. Open server manager and expand features. First selection is for .net 3.0.
PCI-X is a high-performance variant of 64-bit PCI designed for servers.
1) Start / Administrative Tools / Server Manager / Features /  Add
Features / Select “Desktop Experience”
2) Install and restart the PC  and then reinstall Picasa. 
