I have the following list of data..actually alot of it... 950783356 13564 348 13564 348 950783099 10631 343 10631 343 950782800 16909 354 20544 361 950782500 19584 343 20544 361 950782200 16041 342 19060 347 950781900 12396 409 14217 442 950781600 11183 435 11444 442 950781300 8332 407 9999 535 950781000 11308 471 14224 535 950780700 14224 331 14224 331 950780400 14405 451 14500 514 950780100 18492 389 19707 514 950779800 15180 345 19707 352 950779500 12726 382 12909 399 950779200 12329 365 12909 399 950778900 16787 356 18903 361 950778600 16636 371 18903 378 950778300 18704 388 21082 395 950778000 25992 380 29089 395 950777700 26748 316 29089 372 950777400 34714 375 39972 428 I need to take each of the 1st, 2nd, 3rd and 4th column and place it into a block database...(incrementing some totals) simple engough..however I need to ensure that the time stamp (the first column) us unique before adding to the database. Any simple rebol function to aproach this? For those of you curious the data is from MRTG Cheers Francois