I've aquired a Hp office jet 6200 series all-in-one.I have a Dell Inspiron2200 laptop.Ihave wireless internet access on my laptop.Is it possible to download from the internet what I need to know and do so I can talk to my all-in-one with laptop?At present i don't have any extra accesories(usb etc.).

Yes you can

Is it for all computers and devices? Or just the wireless printer? Does everything work OK without the printer on the network?

Hi
one possible cause for this could be your connection setup. Make sure your antivirus is not blocking incoming connections from other wireless devices. You must disable your firewall for your wireless connection to be accessible to other wireless devices. If you're using norton then your firewall is managed by norton, so you should disable the firewall from the norton interface. Hope this works.

Read this HP link:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01579338&cc=us&lc=en&dlc=en&product=421991&tmp_track_link=ot_search

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

I have HP 6500 office jet connected via USB to office DELL desktop. I also need to print wirelessly from Vista laptops in the building. Does anybody know how to do that ?

Dear! You will have to enable wireless conection to access the router and internet. Check your adapter settings and enable wireless conection. Your problem will be solved.
Thanks

installing an auto update fixed this problem

Your problem sound weird. Check it out that your are inserting the right password and also see that the key cap is off or on acording your password.

my hp pcs 2355 all-in-one i can intalls the printer

The OKI 5200 is a 'GDI' or Windows only printer and does not support PCL or PostScript languages.
Most if not all of the printers listed support either PCL or PS or an inkjet based language.
I'm afraid you will not be able to print the the 5200 without it's driver loaded on the PDA.
If the 5200 supported PCL you would be able to choose any of the
Color HP Deskjets.