hey~ I also got the problem with u befor, coz this is very "difficult" to save it in rom, and their answer haven't clear to say where should put the file well, let my share my solution
first u go to rom's ACCESS NetFront3, and and change the netfront3.exe to NF3Main.exe, then u move ur download from other's "netfront3.exe to the same floder. also cut the NF3ResourceLib.dll to other place, and change the file name to NF3ResourceVGALib.dll, then u need to cut it....(later u need to copy it to other netfront floder...)
next step, copy the NF3Main.exe
u need go to programe, netfront3, and now pastethe NF3Main.exe and skNF3 here, also pase the NF3ResourceVGALib.dll here
so u may success
I know my say is very difficult to understand, if still don't know, ask again la~ hope can help u