Outlook Send From the Wrong Account when Exchange & POP are in The Same Profile - Please HELP!

Hello,

I have been looking everywhere for a solution with no luck. I have an
offsite home office. For 5 years, I have been using outlook with
multiple POP3 accounts. Now my company wants our US division us to
join their email system using exchange and a software VPN. I want to
run my exchange account and POP accounts in the same profile.

The problem that I have is when I send a mail from my default POP
acount, it send it from the exchange anyway. What happens is exhange
uses the account above it in the accounts list. For example. I send
an email to our controller who is setup in the global address list on
the exchange server in Switzerland. I see her US address in the send
to field (we have different domains - i.e. company.com (Switzerland
employees) and companyusa.com (US employees.)) So i send the mail to
her and my default POP companyusa.com is checked as the sending
account. When it goes and I look in the sent folder, I see From
sent on behalf of myname (exchange name). When
she sees the email on her end, it has from: and not
.

I don't want any mail to send from the exhange account
. I tried deleting the global address book from my
address books, but that didn't work either.

I have built a workaround so that I can use my .pst and .ost files in
the same profile. I have rule that if I send or receive from the
exchange account, it moves it from my .pst inbox our sentbox to the
appropriate exchange box on the server.

Is there any way to have all my accounts on the same profile and keep
the sending clean? I don't want my customers to accidentally see
exchange email because I am only testing it to see
if it will work well for us in the USA and while on the road. Also,
since I am a standalone office, My outlook is my life and I really
need my personal email available on the same profile.

Any help would be greatly appreciated.

Kind Regards
MalNSF

PS. I forgot to tell you that I am using Windows XP Pro with Office
XP, which is Outlook 2002. Thank you in advance for your help.
MalNSF