i looked at the mobileaction website and did see the advert for win 98 se drivers and software for this phone.
however the manual did not really give any information on what can be done with the software, plus with that software not everything seems to be available for the 6630.
you mention that you have win 98, not win 98 se. is this the case? the mobileaction stuff does not seem to support win 98 either.