Hi Liz,
In t.code F110,
1) Pass Date and ID then click on Parameter tab,
2) Pass Company code,Payment medium and Date
and below Vendor(Select Vendor from FBL1 for some open items).
3) Click Status and then Proposal button.
4) Click PrintRun
5) In PrintOption Tab Pass some Variant to printprogram.
6) Click Print.It will generate a spool as background, check it in SM37 t.code.
Hopes it helps you.
Ali