Do I need a switch?

At times, it is difficult to establish a connection with another computer (ie file sharing) and occasionally I will lose connectivity on an already established connection to a specific computer. Does it make sense for me to install a switch along with my router? Typically, I am transferring large files, checking e-mail, printing, uploading to ftp sites and browsing the Internet through the dlink router.

A switch may not be a bad option, however make sure that you need it and that your router is functioning properly before you go the switch route.