Network Configuration?

We run a very mixed network here. If I had the opportunity and the time to do it all over again I would implement Windows NT/2000 Terminal Server and Citrix Metaframe. Running a Terminal server environment will decrease support of individual pc's and applications and offer a lower cost on the user end hardware as well. (Take a look at thin client hardware)
Terminal server allows for some great functionality; central administration, shadowing, ease of administration, etc..
The addition of Citrix Metaframe to the equation allows for even tighter control as well as load balancing, published applications, etc.. You can learn more by visiting www.citrix.com and http://www.microsoft.com/ntserver/terminalserver/default.asp .
Of course the kind of configuration implemented will depend on how many users you plan on deploying to, the functionality that you hope to get from the network, administration concerns and others.
I hope that this has helped and good luck!

It will depend on what you are using your network for. What applications are you using, what operating systems are your end users using. How many sites are you supporting, what is the bandwidth between those sites?

Question is too vague for a "all encompassing" answer in this forum without more information about requirements, etc...

It should not be an either/or solution for your organization. You should choose the best options for what you are trying to accomplish.

Since you rejected the other answer to this question, you will probably reject this one as well. Remember anyadvice once solicited can be valuable even if it is not at the moment received. But, you need to consider many problems may require many solutions and a single solution will not always fulfill the majority of the needs of your users. Locate the bestsolution with the best support and you cannot go wrong.

You can use your Novell servers in a mixed network with NT and serve your users in the best possible way. You can use a single administrative tool to manage both networks and be a hero. The users never have to know that one or the other is providing their service. And that is all they care about is service. Providing service and support is the key to any IS solution. Make sure that your solution provides the services the users are looking for and you can support the system efficiently and effectively to meet their needs.

Good luck and remember in IS that one size does not fit all!