brothers fax/5in1mfc installation 'Netinbox.exe" not in register??

Hi everyone, ok here another newbie. problem, i installed 3.5 into
home/xp/sony and its exact words ARE (DESKTOP) could not load or run
'Netinbox.exe' specified in the registry. Make sure the file exists on your
computer or remove the reference to it in the registry. 1. a
very inexprience computer user, who has boughten every freaken book on the
market for xp home ed. and yet, still unable to figure out anything with the
os. quicken progr. won't backup, the whole system won't back up. had a 2 yr.
legal fight and won, got my xp discs. yet, even when i had tech supp. i
didn't get tech supp from sony or m.s. now warranty gone bye-bye. Niw u got
my history. back to the problem. I have a brother mfc 1950mc 6n1 w/missing
link system. film cartridge, (anaphylactic shock to toners) tried to in
stalled. u got the exact message. ps. modem 14.4 in the brothers/56k in sony
xp home, dialed up, 200 income per month, can't afford anything else. u know
soc.sec.
would appreciate anyone help in getting the 2 to work together. gina