Cant remove two items

Norton picks up two items that is cannot remove.  Packed.Generic.200 and Infostealer.  I have went thru the steps it says to rid my computer of them to no avail.  When i run Malwarebytes i get two constant hits Rootkit and trojan.agent.  It says that it removes Rootkit and will remove Trojan on reboot, but after reboot it is still there.  I can not get hijackthis to run.  It was a pain just getting it to install.  I need help.  Here is my latest Malware log

 

Malwarebytes' Anti-Malware 1.37
Database version: 2283
Windows 5.1.2600 Service Pack 3

6/24/2009 8:32:11 PM
mbam-log-2009-06-24 (20-32-11).txt

Scan type: Full Scan (C:\|)
Objects scanned: 235502
Time elapsed: 31 minute(s), 23 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 1
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 1

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\UAC (Rootkit.Trace) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\system32\uacinit.dll (Trojan.Agent) -> Delete on reboot.