Having problem installing Snowleapord, going back from lion.

Question

I own MBP 2.66C2D 13" 2010, I downloaded and installed lion very first day, before that i was felling my system response is getting quiet slow, after intalling lion i felt that i should refresh my machine from scratch so i can have every thing back (talking about speed), what i did i restarted the machine and used command+r to get into recovery mode of lion, there i erased my main HDD and selected the option to reinstall lion, after couple of clicks i noticed that lion is again downloading, i already have installation disk which i made after downloading lion first time, so i thought that i should reinstall snow leapord from the dvd and then install lion from that disk, i again restrated my book after inserting leapord dvd and holded option key there i selected dvd as a boot drive and my system started asking me about language then when i was moved to the screen where i was suppose to tell system in which drive it should install leapord my main and only HDD was comming with full free space but there was small yellow exclamation mark and when i selected that disk it said cant install in this disk, this is my first mac i bought it last year never tried to do this before, i was long time windows user, i would like anyone to help me what i did wrong and what im lacking, please reply as soon as you guyz can i cant keep my system in this position tomorow will be momday and i have to prepare my system for starting the week.

Answer 1

Ok JaEvo, i finally resloved the issue, i couldnt installed snow leapord then i left the idea of installing that, what i did i restored my lion back frm my time machine backup, everything was there where i left that, so accessed my lion dvd and noticed that my dvd had only one file and i.e. Dmg file, i read the article again of making lion dvd so i realised that i made that dvd by just copying dmg file on my dvdand pressed burn button on my finder, so finally i erased that dvd and used disk utility to burn that image on dvd so after burning process i got 3-4 files & folders in the disk, then i restarted my system and holded c till i saw he apple logo and little gear, after almost 10 minutes i again came to lion restore page the i erased me main HDD and gone back to option where i selected install new copy of lion, lion gave me 30 minutes in begening and saying it will download some component and in 5 minutes my system restarted and installation began, took almost 15-20 minutes, then every thing started freshly i made account & etc, but for those who are having problems with lion i must say do clean installation if lion and see how Lion will roar on your machine, soon we will see 10.7.2 and i believe we will have so many small bugs fixed.
Thanks for everyones support, this will help others.