This sounds like an opportunity for you to shine, if you do it the right way.
Are there more than just a few employees for the entire company?
If so, do they have any kind of Domain setup, or is this just a workgroup?
You could recommend a total solution package such as Windows Small Business Server 2008
Now back to what you described....it sounds as if your clients want two things done:
1. A backup solution, which you have to think about company expansion, size of the data, daily, weekly, monthly, incremental, and full scenarios, as well as verification that the data that you backed up is not corrupt.
You of course will have to support this solution, so are these regular customers and do you have a service level agreement (SLA) with them?
What is your budget? Is this a one time budget, or are they willing to fork over a monthly allowance for additional driver storage and off-site storage such as a bank safety deposit box? Who is responsible for taking the backups to the bank, what happenss if you are "not available after a scheduled backup? Have you written a backup policy that you would want to hand over to the company? How long will you keep the backups? How will you verify that the data that is backup is not corrupted?
2. Disaster recovery, there is no point in having backups done if you haven't thought of Disaster Recovery, which is why we do backups...in case we lose some kind of data, which is normally a disaster of some type to someone. When you think disaster recovery, think about environmetal, physical, criminal, and unknown scenarios. How will you get them back up and running. What is the plan should one of their laptops, or perhaps the workstation that holds the shared data is fried? Will you be responisble for purchasing a new laptop, or will you commindeer (sic) someone else's for temporary use. Do they have a budget for exmergency purchases? Do they have a small business account with TigerDirect for example?
On the outset, it sounds like the business you are supporting wants a simple fix, which may be well and good until something horrible goes bad and make no mistake about it, they will come to you, whether it is wil requests for help or direction of blame. Try not to solve a broken arm with a bandaid, when they are gonna need their arm set and a cast.