dllhost.exe, dllhst3g.exe, rundll32.exe -- What are these programs?

[Donald Canton]

Can someone tell me what dllhost.exe, dllhst3g.exe, and rundll32.exe
in \windows\system32 are used for? I tried executing with /? to get
help but nothing happens. Thanks.

 

[Phil]

dllhost - dllhost.exe - Process Information
Process File: dllhost or dllhost.exe
Process Name: DCOM DLL Host Process
Description: DCOM DLL host process that supports DLL-based COM objects and
is used by many Windows programs.
Company: Microsoft Corp.
System Process: Yes
Security Risk ( Virus/Trojan/Worm/Adware/Spyware ): No
Common Errors: N/A
DLLHST3G.EXE (COM Surrogate). A COM+ process component.


rundll32 - rundll32.exe - Process Information
Process File: rundll32 or rundll32.exe
Process Name: Rundll32
Description: Microsoft "Run a DLL as an App". RUNDLL32 is the Microsoft
Windows program that loads DLLs into memory so that they can be used by
specific programs or by Windows.
Company: Microsoft Corp.
System Process: Yes
Security Risk ( Virus/Trojan/Worm/Adware/Spyware ): No
Common Errors: N/A