Under your Employees Table click on the window select button on the window below and choose Account Setup and click on the Vacation Accrual account and window select on the window below and choose Pay Codes. In the Description field type the following:
Vac Accrual YTD = @Y
When you process a PAYRUN for employees with the above in your Pay Codes description of your accounts the above text will appear in the check details with the @Y replaced with the correct calendar year to date amount.
In regards to the employee ID appearing on the pay stub, add the slot ITEM_ACCOUNT to your template which will show the cross accounts in the check details. An example template to look at is deluxe_check_080907.xls which is in your nv20.dat/object/newviews folder.