purchasing web services

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hi

1. i would like to know from where i can buy webservices that can work with
..net applications, webservices for specific business needs such as accounting
and other processes ? its better also if they can be implemented offline on
network.

2. haw can i implement sending sms in my application can that be done with a
online webservice provided by company that have the required hardware and
which company offer such thing ?

3. for sdk's that are provided by microsoft accounting and dynamics product
do they allow developers to use a webservice or api in thair own application
and user interface or they make a connection with the application only ?

thank you.
--
Ammar S. Mitoori
IT Head QIMCO Co.
Tel : [phone]
Mobile : [phone]
Fax : [phone]