Strange screw on packard bell R 1900 series

[pirlonga]

Hi, i'm new in this forum, and i'm Italian so sorry form my english.

I've to repair a packard bell R1902 (change the supply connector witch is broken) so i need to have access to the mainboard, but there are 3 screw that are out of standard.

Can someone tell me about the screw model?

(i have the photo but this forum don't support the file upload).

Thank's[/img]

[vtech]

You can either search on the net or post a picture. ... can NOT upload to the forum, but you CAN use any of the photo sites to upload & post the link.

is it any of these?