I tried everything. EVERYTHING I COULD THINK OF!!!

Yep. The subject says all.
I run Win NT on my laptop, and I have a PCMCIA 56k modem card.
For some reason, I can't send "big blocks of data" with
my modem, for example to upload during a ftp connection.
I asked this question previously and got some new ideas.
Somebody told me that it is a problem of buffer, related to
the MTU number and associated stuff. I still haven't figured
out a way to know exactly what the connection settings are
about those "buffers numbers".
Does somebody know that?
Another guy told me that it could be Flow Control. This is not
it, I tried to disable it both in the Port Configuration Panel
AND in the modem configuration panel.
So what can this be???
I'm starting to be tired of trying to solve this problem, since
I can't upload my website easily!

It is a weird problem, that, for sure. Because when I'm running
a smtp server, the delivery of "big emails" goes through without
any problem.

Any other idea, hint?

Thank you VERY much for your help.
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gaggioAuthor Commented:
Ohh!!! And I forgot.
I have a dual boot system, and under Win98 (which I almost
never use), there is no problem...
> Somebody told me that it is a problem of buffer, related to the MTU number and associated stuff.

Your colleague is correct.

Your ISP has a "small" buffer-size, and your attempts to send a "large" buffer cause "unpredictable" problems.

Note that "downloads" (from your ISP's "small" buffer into your "large" buffer) will have no problems.
gaggioAuthor Commented:
Thanks Otta.
But now, the question is:
"Do you know how to solve that?"
Nobody has been able to tell me exactly how to solve the problem.
What Registry Key do you have to edit and how?
Is there a program that you can use to actually see/test the size of the buffers and compare it to the size of the ISP?
Thanks for helping
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gaggioAuthor Commented:
And why would I have no problem with Win98?
Because NT and 98 are two very different OS's. I wouldn't recommend a registry edit...at the best of times. If the modem uploads fine in 98 but not in NT then I'm curious how your modem works while on the Net with NT at other FTP sites. Try uploading to other sites while in NT. Just curious to see what happens. Has to be a setting in NT if it's slow all the time but it's probably not a registry fix.
gaggioAuthor Commented:
Thanks trevmac.
I'll try uploading to another site.
But I think that it is not the answer.
I think that the problem is local, since it is not only FTP that does not work.
I could have mentionned also that telnet does not work either if I paste a block of characters big enough (100-150 chars) in the telnet window: the connection hangs. But typing normally with the keyboard is fine.
Everything in this problem tells us that NT has to be tuned in some way, but I don't know where!
Of course, I know how to use regedit, but tell me where I have to use it, because using it randomly might transform me rapidly in an anti-MS person...
might be irrelevant or sound silly but:
do you have a different driver for NT and 98?
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gaggioAuthor Commented:
Thanks much.
1cell... of course there is a different
driver, because the NT driver system is completely different! Why do you think there is no USB driver for NT?
Yes, this is a fact, all drivers stuff usually work better in Win98. Just because developper prefer the Win98 system (it is easier to program).
> developper prefer the Win98 system (it is easier to program).

I recently saw a Microsoft(!) advertisement, stating that NT is 30% faster than Windows 98.

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gaggioAuthor Commented:
Hey Otta.
You finally get the points, because you tried to help me the most. In fact, it was my colleague who was right: I had to remove "Hardware Flow Control" from the DIALUP NETWORKING (in the properties of the connection that I am using).
Well, to this, I have only one comment: Microsoft sucks.
Simply because there are already TWO other places were you can adjust the flow control of the modem (in the control panel - properties of the modem AND in the properties of COM1 the port I'm using).
So what the heck? Why is it needed to put another button in the connection properties?
If somebody knows, I'd be glad to understand...
For now, I do think that it is completely silly, since I had to disable hardware flow control in this box only: the two other adjustments DO have it enabled...
(and of course it is better to have it enabled - it is faster and more reliable than "none" or "software control").

NT 30% faster?
Yes, but how many people do use NT?
Companies do not need drivers, gaming freaks and home-users are the first users of all sorts of external devices.
That's why programmers code for Win98!
And I repeat it: the driver interface is EASIER in Win98.
gaggioAuthor Commented:
this is for you
Thanks to all the persons who helped, though!
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