Today I've been trying to debug an application remotely with IDA Pro and I found the following error when launched the program:

Copying the debugger server to PocketPC ...
Could not invoke debugger server at PocketPC: Access denied.

Thus, surfing the web I found a workaround regarding the security polices of the handheld. Just by changing some values in the registry you will be able to copy/invoke the debugger remotely.

Key: 'HKLMSecurityPoliciesPolicies001001'  from  value DWORD:2 to value DWORD:1

Key: 'HKLMSecurityPoliciesPolicies00100b' change  to value DWORD:1

And now you'll be able to debug your programs remotely :-)