I am trying to create a report in Crystal that is a check register for the current month that pulls information such as vendor code, check no, check date, check amount, dec, but most importantly, the general ledger account charged.  I can get this report to run with all the info I need but I have not been able to link the GL account to it. Has anyone attempted this? If so, any help would be greatly appreciated.  Thanks!

I sort of disagree. Sort of in that other systems (Great Plains, Solomon, Syspro, Visual, etc.) do this, but not usually in a "report" format. Usually done as a query that is displayed within the user interface.
 
That said, it could be done as a report, but would require a series of embedded sub-reports and without program logic to drive which reports appear under which conditions (as Lynn indicated - PO versus voucher and such) it would be REALLY difficult.