Ran hijack this. Does norton not check the type of files listed in this log?

Norton Security | Norton Internet Security
1

Is there a forum where I can get assistance in identifying lines and registry keys found by hijack this.

 

FOR INSTANCE:  Can someone tell me if these are malware, spyware, or just rascally problem areas?

 

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.overture.com/d/search/p/hp/?Partner=hp_elifepav&Keywords=
O2 - BHO: (no name) - {483ACC19-16A7-46FB-BE39-B8B394AD2C96} - (no file)
O2 - BHO: (no name) - {E070D8E8-CD87-44D1-8C4B-67E23766B0C2} - (no file)
O20 - AppInit_DLLs: grjitm.dll  

 

The last one HIJACT THIS actually says normally only appears when used by a trojan.  By the way, these lines are not from my hijack log, these are suggested, by a third party, as problem lines if found in anyone's puter.

 

 

Any discussion concerning these lines is appreciated. 

                                                                                             Thanks