In our fast paced world, it does make sense for you to have access to your server while away from your desk and on those few occassions when having a tablet with you might be a little awkward, access from your phone might be your best option.
Padersync is the best choice on the blackberry but at $7.50, it may be considered a little pricey.
Like the Padersync, the only snag to this exciting application is that it uses a separate data plan from your BIS plan. Might make sense to subscribe to a N1000 plan from any of the networks available in Nigeria instead of eating up your call credit.
Would give it a test over the next couple of days, hope the feedback would be good.