VB4.1.12 Attachment files

[Vishaaldesiking]

Hello,

I need a cronjob for:

Table Thread:
If forum id = 74,75
what is that firstpostid?
Take that firstpost id

and in table attachment:
search that firstpost id in table content id
if firstpost id==content id then update in attachment table dl_x value = 0

Is there some php who can help me with this??
i have check all tables and need to get this fix