Version:           3.5.7 (using KDE 3.5.7, compiled sources)
Compiler:          Target: x86_64-mandriva-linux-gnu
OS:                Linux (x86_64) release 2.6.22.12-laptop-1mdv

1) fill Konqueror's Location as \\computerName\sharedFolderName
2) it opens login dialog where type login: msDomainName\userName and password
3) it overwrites location to smb://msDoma...erName@computerName/sharedFolderName (this abbreviation isn't mine. May be rule 6 characters + "..." + 6 characters?) 
4) shared folder is correctly open and is possible going through subfolders but is impossible return up or modify some file. It opens login again but login name contains "msDoma...erName". Although I change it to correct form msDomainName\userName I am unable to login until I change location to smb://msDomainName\userName@computerName/sharedFolderName

computer (Samba) isn't included to MS Domain. I solved problem by make it what about if somebody needs to use resources from multiple MS domains.
current Samba Version 3.0.25b (unfortunately today was updated Samba packages :( )