hey rak_007 i did read some where on teh internet that 7.2 doesnt work on Vista no matter what you do and i did read that after upgrading the Tally to 9.0(not sure about the version) it works on Vista,give me some time i will help you out ,me at work now let me ask my manager will get the ans by 11 AM today ,btb i work for Microsoft Vista Networking BPO.. moved out of Dell Some time back