Hi there,
I'm a Systems engineer and technical architect form Europe- wth 2-3 decades f software and systems engineering background, including tech. architecture using UML,MS Visio, IBM Rational Tools etc-.
I should be able to do draw these diagrams for you, , using MS VIsio- but, may I ask, what kind of diagrams you require(UML, Flow chats , Network diagrams etc.. or?) - and also if you ahve a project requirements or description document?
I look forward to hearing from you soon. I'm available all weekend!