The point of web services is that they are language and platform agonistic.  Therefore you can call a d.n web service from D7 etc.  The restriction is that the web service must only require parameters and results that D7 can support.  it is possible to make a .net web service that only .net can call (thanks ms) but it is as easy to make one that anything can accept.  You might also want to look at using REST, http://blog.marcocantu.com/blog/soaprest.html.
 
I believe it is considered bad form to change the spec of existing functions much as it is in dlls.  You should version them instead.  Adding a new function won't affect existing apps though.

Regards

Sean
-----------------------------
Sean Cross
Systems Development

Catalyst Risk Management
PO Box 230
Napier
Phone:   06 835 5868
Mobile:  027 276 6439
Email:   [EMAIL PROTECTED] 
http://www.crm.co.nz/

Offices in Auckland, Napier, Wellington & Christchurch

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From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jeremy Coulter
Sent: Friday, 26 May 2006 8:06 a.m.
To: [email protected]
Subject: [DUG] Web Services

Hi All.
We are looking at improving some stuff at work, and web services will be something I feel will help greatly.
 
What  A interested in knowing is, am I correct in understanding that Delphi 7 can talk to a D2005 .Net webservice?
 
If the above understanding is correct, if I make a change to the web service, then I need to also change the exe calling the webservice?  i.e. if I add  new functon t the webservice, then the caling exe needs to know abou it etc. etc.
 
is this correct?
 
 
Thanks, jeremy

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