In today's modern version it is: XXIX-VI-MCMLXXXVIII
XI.XII.MCMXXXV
You have forgotten to write the date.
You can write the date 12.06.2008 as XII.VI.MMVIII
I/X/MMIX
The answer is IX.XVII.LXVIII.
"MCM" is 1990 in Roman. The rest of the date doesn't translate well as the Roman calendar is not the same as our own.
That depends what your date of birth is, you can simply represent the month with a number so that, for example a date of birth like 12th October 1539 could be written as 12-10-1539 and these numbers could be represented by the Roman numerals XII.X.MDXXXIX
The date January 8, 2001, is written as VIII.I.MMCI in Roman numerals.
XI-XXIV-MMXI
XXIX-January
III-XXXI-MMVII
XI-XXII-MMXI