urgent help needed ILR

[georgy1]

Hi I would be applying for ILR this year under new rule change after 28th oct 2013

My BG( 2 year on WP(work permit) and 3year(Tier 1) currently hold it.

My questions are regarding absences of leave from UK.

1) Do i need a letter from my previous company that is when i was working on WP for this and dose that letter mentioned the salary paid to me ?
Also what are implication if could not get it for any reason like in my case its 3 year back and if they didn't hold that record now?

2) Is Gross Dividend or Net Dividend can be used for points calculation?

thanks in advance for reply