Question : adding static IP addresses onto a network. anything I should take into account?

I am a network administrator on small network of approximately 11 client PC's and 4 printers.
We have a Cisco 3620 Router which manages internet connection - Satellite, Wi-Fi, 3G etc
I have a Windows Server 2003 backed by a NAS and 2x 2560Cisco Switches.

If I want to statically assign an IP address to either a PC or printer within an available range, will both Windows Server 2003 the Cisco router automatically recognise it and add it to the routing table, or will I have to physically add it myself. Also if I want to remove static IP addresses no longer in use which command do I use and where.

Sorry if this sounds basic, but I am trying to learn networking, and have been thrown in at the deep end!

Any help massively appreciated.

Answer : adding static IP addresses onto a network. anything I should take into account?

No, if you want to remove the IP of a printer, you need to connect to that printer's print-server or management utility, and then remove the IP from there.

IP conflicts often occur through other issues, like if you have setup a port on a managed switch to 100MB/Full Duplex and the corresponding NIC of the connected PC is set to something else. Usually the two will still talk to each other but with errors. Normally the best thing is to use the default "Auto/Auto" on both sides. I've also seen issues caused by having too many network protocols installed on PC's (most of which aren't required, like IPX or similar).

The other thing you must be sure of is that there is only one active DHCP server present on your LAN.