Have a volunteer or someone on staff create and reliably maintain your website. If you don't have anyone, seek training for yourself. Frequent maintenance of your website is crucial. Set up a secure server on your website to enable your organization to accept credit card donations over the Internet. Even the smallest two-person office derives benefits from being on a network.
Printing is easier, editing documents is easier and viewing and sharing data is greatly simplified.
Invest in your workstations. Buy a Pentium-level processor with the fastest speed you can afford, the largest RAM you can afford, and the largest hard disk you can buy. Establish a back-up system. You never know when your mother board will decide to stop working for no apparent reason. You will need to use this software for data entry, coding, indexing, sorting and queries, mail merges, generating reports, etc.