• Core Earthlink Files Needed for Wireless Access:
MinstrelApp.prc -- Wireless configuration, NEEDED
OsActivator.prc -- Only for initial activation, can delete after that

• Earthlink Mail Programs:
OSMail.prc -- Main Mail program

• Earthlink Menu/Content:
EarthLink -- Main Earthlink Menu program
OmniMaster.prc -- Content
OmniSky.prc -- Content
OneTapAct.prc -- OneTap stuff
OsOneTap.prc -- oneTap stuff
OsResource.prc -- Content, I think?
Blazer.prc -- Blazer Browser, this file has the "hidden" atribute set so you won't "see" it in the launcher unless you change that atribute using Filez or similar program.

• Earthlink Data Files:
These data files are associated with their respective program files above such that if you delete the program, its data will be removed as well. They are listed here for reference purposes only.
OSkyOtAcct-P91P.pdb -- Mail
OSONETAP3.pdb -- OneTap
OSCHNL3.pdb -- Content
OSCONTENT3.pdb -- Content
OSIMAGE3.pdb -- Content
OSIMAGE3c.pdb -- Content
OSIPCode.pdb -- you MAY need this, I'm not sure
OSMYCHNL3.pdb -- Content
OsServicesDB.pdb -- not sure, but looks like content