Here is a site that may help you
Netmba.com

On the left hand side there is a space to search netmba for adjusting and closing entries.

Also, a post-closing trial balance is your trial balance after you post your adjusting and closing entries.

Here is a copy of one from my prior homework:

AAA company
Post-Closing Trial Balance
September 30, 199X

Debit Credit
Account:
Cash 29,343
Accounts receivable 4,200
Prepaid rent 2,700
Prepaid insurance 2,200
Photographic supplies 315
Office supplies 125
Land 7,500
Photographic equipment 52,900
Accum depreciation- photo equipment 400
Office equipment 29,000
Accum depreciation- office equipment 250
Vehicle 12,500
Accum depreciation- vehicle 500
Accounts payable 7,930
Note payable 20,000
Salary payable 350
Interest payable 100
Unearned photographic service revenue 5,500
Philip Browning, Capital 105,753
Total 140,783 140,783