Microsoft AntiSpyware – GCASSERVHOOK.DLL
Files called gcasservhook.dll, gcasserv.exe and gcasdtserv.exe install as part of what was Giant AntiSpyware by Giant Company Software. This program promises to protect your system from common adware and spyware threats. The program has since been purchased by Microsoft and is now available as Micrsooft AntiSpyware. More information can be found at http://www.microsoft.com/athome/security/spyware/software/default.mspx.
If you like using this program, then leave these files in place. If not, they can be removed using WinPatrol or uninstalled via Control Panel > Add/Remove Programs.
Safe
Microsoft