We recommened you uninstall all beta versions of Unsniff before installing R1.0.
To uninstall Unsniff Network Analyzer, use Control Panel -> Add Remove Programs

Release Number : R_1_0_0_1206
Platforms : Windows 2000, Windows XP

Highlights :

• All issues and bugs from Beta-2 are fixed in this Release

Pentium III 500 Mhz or higher
128 MB or higher RAM 
30 MB minimum hard disk space (recommended 1GB)
Ethernet 10/100/1G interface card