1.Is it possible to change the delay of 10 seconds on the welcome screen before linux boots up ?
sure, change the timeout value in the syslinux.cfg (for cdrom its isolinux/isolinux.cfg).
you have to multiply seconds * 10. ex. 100 = 10 seconds , 150 = 15 seconds....
0 = no timeout
2. where do I have to put the "linux copy2ram" option ?
do you mean in the boot menu? simply enter "linux copy2ram". if you want to have it per default, then edit syslinux.cfg and add "copy2ram" at the end of the "append" line
regards
elmar