Walt, in order to better service your question, can you start a new thread? Rephrase your question and include more details: your system info (which version of ArcGIS, your OS and whether 32 or 64 bit) and if possible attach some sample data.
And just to clarify, when you say you have an accdb table, this doesn't sound like data that is 'spatially enabled' - you can't use a geoprocessing operation such as 'clip' on just a table...but you can do something like join to something else already spatially enabled, maybe make some sort of selection, and clip the result to create an output that perhaps you can copy rows from in order to create just a table (no spatial attributes). However, lacking details, it isn't clear if you've established read-access to your accdb to begin with.
ArcGIS can 'piggyback' on the Access db format and use geodatabases with the mdb file extension - but this isn't read/write in quite the same way (nor is it recommended) in Access as it is in ArcGIS. Do you indeed have an mdb geodatabase or is your source data created/maintained in Access?
PS - Welcome to the forums!