I thought this image would support vtp:
x2900XL-c3h2s-mz.120-5.WC3b.bin.....
Cisco's site says this:
Note: The Catalyst 2900XL series switches with Cisco IOS Software Release 11.2(

SA4 and later support VTP protocol. The Cisco IOS Software Release 11.2(

SA3 and earlier code do not support VTP protocol on Catalyst 2900XL series switches