I will post here a very good buy script that i suggest YOU ALL use. Copy Paste this into your autoexec. file found under sys folder in the cs2d folder. It is good for all "regular" matches, like a simple deathmatch.
bind "F11" "ak47; m4a1; deagle; vesthelm; hegren; buyammo1; buyammo2; flash; flash; defuser; sgren; flare; buy slot8 slot7"
bind "F10" "vesthelm; hegren; buyammo1; buyammo2; flash; flash; sgren; flare"
bind "leftarrow" "sayteam << [-Enemy-] Spotted Left <<"
bind "rightarrow" "sayteam >> [-Enemy-] Spotted Right>>"
bind "uparrow" "sayteam ^^ [-Enemy-] Spotted Above ^^"
bind "downarrow" "sayteam VV [-Enemy-] Spotted Below VV"
bind "K" "name (common name you use)" *optional
I do not take credit for making this. I only take credit for distributing it, fairly.