well thnx fore being so kind.. i have solved the problem with the framebuffer in my system by now. Well what happened was is as follows:
i had kernel 2.4.31 before in my slack 10.2 and it had a nice framebuffer support. Later i recompiled my kernel and used 2.6.16.5. Although i had included the framebuffer support as a kernel chunk still my system was not able use the framebuffer.So to check what is goin on i used cat /proc/fb but i found that there is not fb in my /proc.
After that i checked my make menuconfig again for 2.6.16.5 and realized that i hadnt used the vesa vga support. so i chose that option and recompiled the kernel. and now its working fine. i did all this after i send the first post and before i am writing this post. Well thnx anyway for the suggestion to googling ..
actually i use google massively to solve my problem ...