Install some modules on oscommerce site

Finish off a site modification project left incomplete as the current developer disappeared. You need to be very experienced with oscommerce. Basically I need you to add a number of mods. and do minor changes in html pages. Most of the following mods are very small. Here are the a. Actual_Attribute_Price_V1.2.2 b. ad_tracker2_1 c. feedback d. how_did_you_hear_about_us_v1_2( installed but not functioning properly) e. newsletter_subscribers_v045 g. tell a friend about the site (should be installed in left column) i. adavanced categories admin j. Add_customer_details_v1 k. auto database backup l. Auto-Complete_Addition with choose contact n. contact_us_choice_1.0_1 o. customer_testimonials_v1.3 p. customers_change q. EZ new fields r. GNA EP Assistant V2 s. header_tags_aca u. MS2-2.2-SiteMap v. Order_IP_Recorder v1.1 w. orders_tracking_v2.5 x. PageMaker_1 y. Quantity Price Breaks Per Product z. RecoverCartSales1.4c aa. send_order_html_email_v4_0 bb. ShoppingCartEnhancement_v12 cc. stats_recover_cart_sales dd. user tracking with admin ee. Keep Image Proportions 1.3 ff. choose your recipient for contact us page gg. LIVE SUPPORT PLUS 1.00 hh. Autologon secure ii. Customer birthday reminder jj. Customer Updates - Customer Comments v1.0 kk. Improved Order Number ll. Customer View & Print Invoice at Checkout Succes mm. Live support warning sounds nn. Newsletter & Subscribers oo. PDF data_sheet maker 1.1 pp. SaleMaker - All products marked down qq. Whos Online Without Search Engines rr. Sales Report ss. php my visits tt. EZ_Price_Updater uu. Quickbooks [login to view URL] Link Transformer